Chapter Summaries

Chapter Summary: “Next Time, Pull Out More”

Key Plot Points and Events

• Fang Xu uses the newly acquired Attribute Panel to monitor his cultivation and experiment with combining the Rumble-Rumble Fruit, Lightning Release Chakra, an incomplete Lightning Body Tempering technique, and Enel’s experience with lightning.
• The panel tracks even tiny improvements in his techniques, including his Lightning Ball Technique, allowing him to determine whether changes to his cultivation methods are effective.
• Fang Xu realizes the panel cannot directly grant power, levels, or attribute points, but it provides something more valuable for his current needs: measurable feedback and confirmation that his training is progressing correctly.
• He concludes that the Attribute Panel perfectly complements his existing abilities and cultivation system. Unlike Zhou Yang, whose system provides more direct growth functions, Fang Xu already possesses methods for becoming stronger and mainly needs a tool to verify and record his development.
• Fang Xu speculates that Zhou Yang’s system contains additional exchangeable plugins. He decides to gather more of Obito Uchiha’s hair and trade it through the Exchange Talent to obtain further system functions.
• Meanwhile, Obito unknowingly senses someone targeting his hair while helping an elderly woman. He assumes she needs assistance crossing the road, only to discover that she is waiting for her grandson at a dango shop. Embarrassed, Obito runs away while still worrying about the strange sensation on his scalp.
• At the Hatake residence, Kakashi tells his father, Hatake Sakumo, about Fang Xu’s fight with three troublemakers. Sakumo identifies Fang Xu’s technique as a form of Lightning-Attribute Nintaijutsu, possibly related to the Hidden Cloud’s Lightning Body-Tempering techniques.

Character Developments

• Fang Xu becomes more confident and systematic in his cultivation. The Attribute Panel increases his motivation because it transforms vague progress into visible, measurable improvement.
• He also becomes more ambitious, recognizing that the panel may be only one part of Zhou Yang’s larger system. His attention turns toward acquiring more plugins through Obito-related exchanges.
• Obito remains enthusiastic, well-meaning, and comically overconfident, presenting himself as a future Hokage even in ordinary situations. His discomfort over his hair hints at Fang Xu’s unseen attempts to collect it.
• Kakashi becomes more attentive to Fang Xu’s abilities. Although he had previously considered Fang Xu mediocre, witnessing his efficient use of lightning causes him to reassess him as a potentially dangerous or unusually talented shinobi.
• Hatake Sakumo demonstrates his tactical knowledge by quickly identifying the nature of Fang Xu’s technique and considering its possible origins.

Significant Themes

• The danger of cultivating incorrectly: Fang Xu fears following an untested path, since his lightning-based system combines techniques and powers that have no established precedent in the Shinobi World.
• Progress through feedback: The Attribute Panel represents the importance of measurable results. Effort becomes meaningful when a cultivator can confirm that it is producing improvement.
• Self-directed growth: Fang Xu does not require a system to dictate his path. He already has the necessary resources and uses the panel as a tool for evaluation rather than as a source of strength.
• Hidden talent and misjudgment: Fang Xu’s classmates and even observers like Kakashi initially underestimate him, while his unusual lightning technique reveals that he is far more capable than he appears.
• System exploitation and ambition: Fang Xu begins viewing Zhou Yang’s system as something that can be dismantled and acquired piece by piece, increasing his desire to obtain more plugins.

Important Character Interactions

• Fang Xu interacts with the Attribute Panel while testing the Lightning Ball Technique, using its feedback to judge the effectiveness of his training.
• Obito attempts to help an elderly woman but misunderstands the situation, creating a humorous encounter that highlights his earnest but impulsive personality.
• Kakashi reports Fang Xu’s abilities to Sakumo during dinner, prompting a father-son discussion about Fang Xu’s lightning techniques and possible connection to Hidden Cloud methods.

Chapter Summary: “Continue Training”

Key Plot Points and Events

• Kakashi and his father, Hatake Sakumo, discuss Fang Xu’s sudden improvement. Kakashi believes Fang Xu likely developed his Lightning-Attribute Nintaijutsu himself because his movements lack long-term polish, despite his unusually strong combat judgment.
• Kakashi expresses interest in sparring with Fang Xu to discover how much ability he has been concealing and to prove his own superiority.
• Sakumo approves the idea but warns Kakashi to treat Fang Xu as a classmate rather than an enemy. He emphasizes proper etiquette, restraint, and preserving their relationship.
• After school, Fang Xu tells Kurenai that he is going to train at the riverbank. He explains that his Lightning Body Tempering, taijutsu, and sword practice consume enormous amounts of stamina and food, forcing him to supplement his diet by fishing.
• At the secluded riverbank, Fang Xu practices the Lightning Ball Technique. He aims to reduce its required hand seals from three to two, then eventually to one or none, in order to improve his control over Lightning Release and better understand the relationship between Chakra-based lightning and the Rumble-Rumble Fruit’s power.
• Fang Xu successfully creates a stable three-seal Lightning Ball and then manages a weaker but functional version using fewer seals.
• After sensing someone hiding nearby, Fang Xu reveals that Kakashi has followed him. Kakashi admits that he wants to test Fang Xu’s hidden strength and challenges him to a spar.
• Fang Xu mocks Kakashi’s poor manners, pointing out that Kakashi secretly followed and observed him before demanding a fight. The chapter ends with Kakashi awkwardly insisting that he already apologized.

Character Developments

• Kakashi: His curiosity and competitive instincts deepen. He recognizes that Fang Xu is much stronger than he appears and is eager to evaluate him personally. However, Sakumo’s advice shows that Kakashi is still learning the difference between testing a rival and treating someone as an enemy.
• Fang Xu: He continues to train methodically and cautiously. Rather than relying only on raw strength, he studies the mechanics of Chakra control and seeks to refine his techniques. His growing awareness of danger is also evident in his refusal to enter the Forest of Death before becoming stronger.
• Hatake Sakumo: He acts as a thoughtful mentor to Kakashi, encouraging healthy competition while emphasizing discipline, restraint, and social responsibility.
• Kurenai: She shows concern for Fang Xu’s safety and recognizes his relentless work ethic, responding to his extreme training habits with friendly amusement.

Significant Themes

• Hidden strength and perception: Fang Xu’s outwardly ordinary school performance contrasts sharply with his real abilities, prompting Kakashi to question how much he is concealing.
• Training and refinement: The chapter emphasizes that true improvement comes not only from gaining power but from mastering control, efficiency, and technique.
• Healthy rivalry versus hostility: Kakashi’s challenge represents competitive ambition, while Sakumo’s advice establishes that rivalry should not destroy trust or friendship.
• Pragmatism and survival: Fang Xu balances training with practical concerns such as food, finances, stamina, and personal safety.
• Scientific understanding of power: Fang Xu analyzes Lightning Release systematically, hoping that deeper knowledge of Chakra transformation will eventually help him combine it with the Rumble-Rumble Fruit’s abilities.

Character Interactions

• Kakashi and Sakumo: Their conversation reveals Kakashi’s competitive nature and Sakumo’s role in guiding him toward respectful conduct.
• Fang Xu and Kurenai: Their friendly exchange highlights Fang Xu’s disciplined lifestyle and Kurenai’s concern for his safety.
• Fang Xu and Kakashi: Their confrontation begins as an accusation of spying and develops into a formal sparring challenge. Their sarcastic exchange establishes a potentially entertaining rivalry built on mutual curiosity, competition, and contrasting attitudes toward etiquette.

Chapter Summary: “Why Is Someone Always Peeking?”

Key Plot Points and Events

• Fang Xu agrees to spar with Kakashi because he needs a skilled opponent to test his recent progress in:
  • Lightning Mode
  • Swordsmanship fundamentals
  • Lightning Ball practice
• He chooses not to use Lightning Ball immediately, relying instead on a Kunai enhanced by Lightning Mode.
• Fang Xu activates an optimized version of Lightning Mode, concentrating the electrical stimulation in key areas of his body—especially his legs, waist, back, shoulders, elbows, and wrists.
• The spar begins with a rapid exchange of Kunai and Short Sword strikes. Fang Xu uses sudden bursts of speed, while Kakashi relies on precise, efficient swordsmanship and battle awareness.
• Fang Xu’s lightning-enhanced movements allow him to compensate for the Kunai’s shorter reach, while the electrical current traveling through the weapons gradually numbs Kakashi’s hand and slows his reactions.
• Kakashi realizes that Fang Xu is not simply relying on speed or raw lightning power. His movements show the structure of Kendo:
  • Deliberate footwork
  • Controlled force
  • Attacks designed to control distance
  • Retreats that preserve counterattacking angles
• Fang Xu’s technique is still rough and contains flaws, but Kakashi recognizes that he has genuinely begun mastering the fundamentals of swordsmanship.
• Hatake Sakumo secretly watches the spar from a nearby tree. He has followed Kakashi to ensure the fight remains safe and to judge Fang Xu’s sudden improvement.
• Sakumo is impressed that Fang Xu has independently developed skill in Lightning-Attribute Nintaijutsu, Lightning Release, and Kendo while also training in the Three Body Technique.
• The chapter ends with Kakashi increasing his speed and using a deceptive sword strike. Fang Xu prepares to block the Short Sword, but realizes too late that the attack is a feint and that Kakashi’s true attack is a close-range knee strike.

Character Developments

• Fang Xu: Demonstrates major growth. He can now combine Lightning Mode with close-quarters weapon combat rather than using lightning only as a source of speed. His Kendo foundation is still immature, but his combat framework, force control, and tactical understanding are developing rapidly.
• Kakashi: Shows himself to be an extremely skilled and analytical fighter. He quickly identifies Fang Xu’s methods, adapts to the electrical interference, and tests him with feints and close-range attacks. He becomes increasingly serious as he recognizes Fang Xu as a genuine combatant rather than an ordinary Academy student.
• Hatake Sakumo: Takes a new interest in Fang Xu’s potential. Although initially observing only as a concerned father, Sakumo concludes that Fang Xu possesses exceptional comprehension and could become highly capable if given proper instruction.

Significant Themes

• Hidden talent and rapid growth: Fang Xu’s transformation from an average student into a promising fighter surprises both Kakashi and Sakumo.
• Independent learning: The chapter emphasizes the value of self-teaching. Fang Xu’s ability to reach the threshold of Kendo without formal instruction marks him as unusually gifted.
• Technique versus raw power: Fang Xu’s lightning-enhanced speed is important, but his disciplined footwork and developing swordsmanship prove that he is not merely depending on an ability.
• Adaptation and analysis: Both fighters constantly adjust to each other. Kakashi identifies Fang Xu’s techniques, while Fang Xu uses Lightning Mode to compensate for the Kunai’s disadvantages.
• Observation and secrecy: Sakumo’s hidden presence reinforces the chapter’s title and highlights the theme of powerful figures quietly monitoring Fang Xu’s development.

Character Interactions

• Fang Xu and Kakashi: Their sparring is competitive but purposeful. Kakashi challenges Fang Xu seriously, while Fang Xu uses the encounter to test his abilities. Their mutual recognition grows as each discovers unexpected strengths in the other.
• Kakashi and Sakumo: Although they do not directly converse in the scene, Sakumo follows Kakashi and silently supervises the match, acting as both a father concerned for Kakashi’s safety and a judge of Fang Xu’s abilities.
• Sakumo and Fang Xu: Sakumo’s opinion of Fang Xu changes from curiosity to serious respect as he observes the boy’s technical foundation and potential.

Chapter Summary: “This Fight Was Worth It”

Key Plot Points and Events

• Fang Xu and Kakashi engage in an intense sparring match near the riverbank.
• Kakashi initially gains the upper hand through superior swordsmanship, reflexes, timing, and combat judgment. His Short Sword repeatedly pressures Fang Xu’s Kunai, damaging it and injuring Fang Xu’s hand.
• Fang Xu recognizes that relying only on close-quarters combat will eventually lead to his defeat, so he begins combining Lightning Mode with the Three Body Technique:
  • Clone Technique to disrupt Kakashi’s vision
  • Transformation Technique to confuse his position
  • Substitution Technique to evade Kakashi’s precise strike
• Kakashi quickly sees through the weaknesses of Fang Xu’s clones and transformations, recognizing that they lack weight and that altered appearances cannot conceal movement patterns.
• After substituting away from Kakashi’s attack, Fang Xu appears behind him and launches the Lightning Ball Technique at close range.
• Kakashi narrowly avoids the attack with his own Substitution Technique. The Lightning Ball destroys the replacement wood and scorches the surrounding grass, demonstrating how dangerous the spar has become.
• Both fighters are exhausted after eight or nine minutes of continuous combat. Kakashi’s hand is injured from repeated clashes, while Fang Xu’s Lightning Mode and ninjutsu have heavily drained his stamina and chakra.
• Kakashi ends the match and declares it a draw. Fang Xu accepts, acknowledging that he is also near his limit.

Character Developments

• Fang Xu demonstrates major growth. He successfully integrates Lightning Mode, swordsmanship, ninjutsu, and evasive techniques in actual combat rather than practicing them separately.
• He gains a clearer understanding of his current level:
  • He can overwhelm ordinary academy students.
  • He can fight Kakashi to a draw by relying on Lightning Mode and ninjutsu.
  • He remains inferior to Kakashi in pure swordsmanship, taijutsu, and combat fundamentals.
• Fang Xu shows improved tactical judgment, learning when to attack, create distractions, evade, and use a decisive technique.
• Kakashi confirms his exceptional skill and experience. He quickly identifies the limitations of Fang Xu’s Clone and Transformation Techniques and repeatedly exploits openings with superior timing and precision.
• Although suspicious of Fang Xu’s sudden improvement, Kakashi respects his abilities and accepts that Fang Xu has personal secrets he does not wish to reveal.

Significant Themes

• Growth through real combat: Fang Xu realizes that fighting a skilled opponent teaches him more than practicing techniques in isolation. The pressure of a genuine battle forces him to connect his abilities naturally.
• Foundations versus explosive power: Fang Xu can match Kakashi through Lightning Mode and ninjutsu, but his basic swordsmanship and taijutsu remain weaker. The chapter emphasizes that powerful techniques cannot completely replace solid fundamentals.
• Limits of deception: Clones and transformations are useful only when supported by believable movement and timing. Kakashi’s experience allows him to distinguish genuine threats from illusions.
• Mutual respect and secrecy: Both fighters recognize the other’s strength while withholding parts of their own abilities. Kakashi questions Fang Xu’s sudden advancement but respects his right to keep secrets.
• The pressure of impending war: Fang Xu explains that the approaching war motivates his rapid training. His desire to survive gives urgency to his development.

Character Interactions

• Fang Xu and Kakashi exchange calm but pointed remarks throughout the fight, acknowledging each other’s strengths without losing focus.
• Fang Xu admits that Kakashi’s sword gives him a clear advantage, while Kakashi recognizes that Fang Xu’s Lightning Ball was dangerously ruthless.
• Their fight ends without hostility. Both acknowledge the damage they inflicted and the exhaustion they share.
• Afterward, Kakashi directly questions Fang Xu about hiding his abilities. Fang Xu claims that he only recently developed Lightning Mode and mastered the Lightning Ball Technique because of the approaching war.
• Kakashi remains doubtful but chooses not to press him, understanding that every ninja keeps certain secrets.

Chapter Summary: “Apprenticeship”

Key Plot Points and Events

• After Fang Xu and Kakashi’s intense sparring match, Hatake Sakumo—the legendary White Fang of the Leaf—appears and applauds their performance.
• Sakumo praises Kakashi for upholding the Hatake family’s reputation, though Kakashi stubbornly insists that he did not lose.
• Sakumo questions Fang Xu about his swordsmanship and learns that Fang Xu has been self-training from written swordsmanship insights for only seven or eight days.
• Impressed that Fang Xu has already grasped the basics of applying Kendo in combat, Sakumo identifies him as a rare Kendo prodigy.
• Sakumo formally offers to take Fang Xu as his disciple. Fang Xu immediately accepts, recognizing both the value of personal guidance and the protection that comes with having a powerful mentor.
• Fang Xu becomes Sakumo’s student, gaining access to authentic Kendo instruction and the political protection of one of Konoha’s most respected shinobi.
• Sakumo compares Fang Xu’s early progress favorably to Kakashi’s, provoking Kakashi’s competitive instincts.
• Kakashi vows to defeat Fang Xu in their next match, while Fang Xu confidently accepts the challenge.

Character Developments

• Fang Xu: Demonstrates exceptional natural talent, quick learning, humility, and strategic awareness. His decision to accept Sakumo as his teacher is motivated not only by his desire to improve his Kendo but also by his need for protection from dangerous figures such as Danzo. Becoming an apprentice gives him greater security and status in Konoha.
• Hatake Sakumo: Reveals himself as perceptive, encouraging, and serious about nurturing talent. He recognizes Fang Xu’s potential despite his rough technique and takes responsibility for guiding him properly.
• Kakashi: Shows pride, stubbornness, and competitiveness. Although he acknowledges that Fang Xu is a legitimate rival, he is uncomfortable with Fang Xu receiving praise and becoming his father’s disciple. Sakumo’s comparison pushes Kakashi to overcome his complacency and work harder.

Significant Themes

• Talent versus experience: Fang Xu possesses extraordinary natural ability, but Sakumo emphasizes that talent does not equal current strength. Fang Xu’s technique remains immature, while Kakashi’s greater experience still gives him an advantage.
• Mentorship and growth: The chapter presents formal guidance as essential to transforming raw talent into mastery. Fang Xu’s self-study has brought him to the threshold, but Sakumo can correct his weaknesses and accelerate his development.
• Recognition and rivalry: Fang Xu’s talent challenges Kakashi’s position as the foremost young genius, creating a rivalry that may motivate both boys to improve.
• Power and protection: Fang Xu understands that strength alone is insufficient in the politically dangerous shinobi world. Gaining Sakumo as a mentor provides both combat instruction and the protection of a powerful, respected family.
• Humility and responsibility: Fang Xu accepts praise without becoming arrogant, while Sakumo stresses the importance of staying on the right path.

Character Interactions

• Fang Xu and Sakumo: Their relationship changes from respectful acquaintanceship to master and disciple. Fang Xu respectfully accepts the apprenticeship, and Sakumo promises to teach him seriously.
• Sakumo and Kakashi: Sakumo both praises and challenges his son. He reassures Kakashi that he did not lose but deliberately points out Fang Xu’s superior early talent to reignite Kakashi’s motivation.
• Fang Xu and Kakashi: Their friendly sparring develops into an explicit rivalry. Kakashi promises to defeat Fang Xu, and Fang Xu responds confidently, showing that neither fears the other.
• Sakumo, Fang Xu, and Kakashi: Sakumo’s comparison between the two boys creates tension but also establishes them as complementary rivals—Fang Xu as the rapidly developing prodigy and Kakashi as the more experienced genius determined to maintain his edge.

Chapter Summary: “Barbecue”

Key Plot Points and Events

• Hatake Sakumo ends Kakashi and Fang Xu’s sparring session and announces a celebratory barbecue because Fang Xu has officially become his disciple.
• The three travel through Konoha toward the shopping district. Fang Xu reflects on how much his situation has improved: he now has Sakumo as a teacher, Kakashi as a rival, and greater protection from the dangers surrounding him.
• Sakumo senses that someone is monitoring them through the Telescope Technique. He realizes that the observer is likely Hiruzen Sarutobi using a Crystal Ball, but chooses not to confront him.
• In the Hokage’s office, Hiruzen watches the scene and becomes concerned that Sakumo has gained influence over Fang Xu too quickly. He recognizes Sakumo’s power, reputation, and importance to Konoha, especially with the Third Shinobi World War approaching, but grows increasingly wary of Fang Xu becoming fully aligned with him.
• Hiruzen reviews Fang Xu’s records and discovers that he is descended from a branch family of the Senju clan. This explains Fang Xu’s unusual potential and gives Hiruzen a new strategy for winning his loyalty.
• Hiruzen summons Tsunade and suggests that she take Fang Xu as a disciple. Tsunade initially refuses, seeing the request as another political attempt to recruit and control someone.
• When Hiruzen reveals Fang Xu’s Senju ancestry and tragic family background, Tsunade’s attitude changes and she finally pays attention to the file.

Character Developments

• Fang Xu: Formally becomes Sakumo’s disciple and gains confidence in his improved circumstances. He remains practical and candid, particularly when he admits that composure does not diminish his desire to eat barbecue. He understands that developing strength will take time and values the protection and instruction Sakumo can provide.
• Kakashi: Shows more youthful competitiveness and emotional energy because Fang Xu gives him a genuine rival. Sakumo views this change positively, since Kakashi had previously matured too quickly and rarely behaved like a normal child.
• Hatake Sakumo: Accepts Fang Xu as a disciple and immediately begins treating him as part of the Hatake family’s younger generation. His battlefield instincts allow him to detect Hiruzen’s surveillance, and he becomes quietly displeased with the Hokage’s intrusive monitoring. His decision also places him in greater political competition with Hiruzen.
• Hiruzen Sarutobi: Becomes more suspicious of Sakumo and more determined to secure influence over Fang Xu. He shifts from gradually cultivating Fang Xu’s trust to exploiting the boy’s Senju heritage, planning to use Tsunade as a connection to the child.
• Tsunade: Initially rejects Hiruzen’s request because she resents the village’s political manipulation and intends to leave Konoha temporarily. However, learning that Fang Xu is a Senju descendant begins to break through her resistance.

Significant Themes

• Mentorship and influence: Fang Xu’s future is shaped by competing mentors and factions. Becoming Sakumo’s disciple offers him training and security but also makes him politically valuable.
• Political manipulation: Hiruzen views Fang Xu not only as a child but as a potential asset whose abilities and bloodline could affect the balance of power within Konoha.
• Legacy and bloodline: Fang Xu’s Senju ancestry gives new meaning to his talents and makes him important beyond his personal abilities.
• Childhood and rivalry: Fang Xu’s rivalry with Kakashi brings out a more natural childhood in both boys, especially Kakashi, showing how competition can encourage emotional growth.
• Surveillance and trust: Sakumo’s discomfort with Hiruzen’s observation highlights the tension between village security and personal privacy, as well as the fragile trust among Konoha’s leaders.
• Protection versus control: Sakumo offers Fang Xu genuine guidance and safety, while Hiruzen’s interest is increasingly tied to political control and strategic advantage.

Character Interactions

• Fang Xu and Kakashi: Their rivalry continues through playful bickering and sparring. Kakashi teases Fang Xu about his composure, while Fang Xu responds with straightforward humor.
• Fang Xu and Sakumo: Sakumo welcomes Fang Xu as a disciple and treats him warmly, taking him and Kakashi out for barbecue. Fang Xu sees Sakumo as an important source of instruction and protection.
• Sakumo and Hiruzen: Though they do not speak directly, Sakumo detects Hiruzen’s surveillance and silently disapproves. Hiruzen, meanwhile, worries that Sakumo’s influence and reputation are becoming too strong.
• Hiruzen and Tsunade: Hiruzen tries to persuade Tsunade to take Fang Xu as a disciple. Tsunade challenges his political motives, but her resistance weakens when she learns about Fang Xu’s Senju lineage.

Chapter Summary: “Starting with the Simplest Things”

Key Plot Points and Events

• Tsunade reviews Fang Xu’s file at Hiruzen Sarutobi’s request. She learns that he is a descendant of the Senju, has independently developed Lightning Activation Nintaijutsu, possesses remarkable swordsmanship talent, and recently fought Kakashi to a draw.
• Tsunade realizes Hiruzen is trying to recruit Fang Xu into his faction through her and strongly criticizes him for involving a six-year-old in political struggles.
• She agrees to meet Fang Xu but refuses to immediately accept him as a disciple. Instead, she will test his abilities and possibly offer him guidance or resources if he proves himself.
• Hiruzen is satisfied because Tsunade’s willingness to meet Fang Xu may eventually create a connection between Fang Xu and the Senju faction.
• At the Ninja Academy, Fang Xu’s classmates notice his dramatic change over the past week. He is now more focused in class, keeps detailed notes, studies intensely, and trains with unusual dedication.
• Fang Xu leaves the Academy with Kakashi to train under Hatake Sakumo. Their growing closeness surprises Obito, Asuma, Rin, and Kurenai.
• At the Hatake residence, Sakumo gives both Fang Xu and Kakashi bamboo swords and begins their training with fundamental kendo techniques rather than advanced combat moves.

Character Developments

• Fang Xu: His rapid improvement becomes increasingly obvious to those around him. Although he possesses tremendous potential through Lightning Release, physical abilities, and the Rumble-Rumble Fruit, he recognizes that his swordsmanship foundation is weak and humbly accepts instruction.
• Tsunade: She remains suspicious of Hiruzen’s motives and protective of Fang Xu because of his young age and Senju heritage. She is willing to help him, but only on her own terms.
• Hiruzen Sarutobi: He views Fang Xu as a valuable future asset and hopes to bring him into his political faction through Tsunade, though he claims he will not directly harm or exploit the child.
• Kakashi: He has begun treating Fang Xu as a training companion and fellow disciple, even urging him to leave school on time. Despite his prodigious talent, he is reminded that he too must continue refining the basics.
• Kurenai, Rin, Obito, and Asuma: Each reacts differently to Fang Xu’s sudden rise. Kurenai is pleased by his maturity, Rin is supportive, Obito is jealous and surprised by his connection with Kakashi, and Asuma feels increased pressure after Fang Xu becomes Sakumo’s disciple.
• Hatake Sakumo: He establishes himself as a disciplined but thoughtful teacher, emphasizing that even talented swordsmen must repeatedly perfect the fundamentals.

Significant Themes

• The importance of fundamentals: Sakumo stresses that mastery comes from refining grip, stance, footwork, breathing, distance, and power control—not merely learning powerful techniques.
• Talent versus proper training: Fang Xu has extraordinary natural abilities, but his lack of a true kendo foundation shows that raw power cannot replace disciplined instruction.
• Political manipulation and protection: Hiruzen sees Fang Xu as a future political asset, while Tsunade warns against using a child in factional struggles.
• Rapid personal transformation: Fang Xu’s sudden change affects how his classmates perceive him and begins reshaping his relationships within the Academy.
• Rivalry and friendship: Fang Xu’s partnership with Kakashi develops quickly, creating tension and admiration among their classmates.

Character Interactions

• Tsunade confronts Hiruzen over his attempt to involve her with Fang Xu and warns him not to exploit the child.
• Kurenai comments on Fang Xu’s increased concentration and diligence, while Fang Xu gives a vague explanation for his transformation.
• Fang Xu openly tells his classmates that he is training under Sakumo, shocking Obito and Asuma while earning Kurenai’s encouragement.
• Fang Xu and Kakashi leave school together, signaling the beginning of a closer relationship.
• Sakumo trains both boys equally, making clear that even Kakashi must return to basic practice and that Fang Xu must build a correct foundation from the beginning.

Chapter Summary: “Dinner Together From Now On”

Key Plot Points and Events

• Hatake Sakumo trains Fang Xu and Kakashi in foundational swordsmanship for two hours.
• Sakumo corrects Fang Xu’s overly tight grip, posture, and technique, while pointing out that Kakashi relies too heavily on speed and quick attacks.
• Both boys improve through repeated practice. Kakashi, initially skeptical, becomes increasingly serious after recognizing the flaws in his own fundamentals.
• After training, Sakumo invites Fang Xu to dinner. Fang Xu eats enthusiastically because of his intense training and Lightning Body Tempering, while Sakumo encourages him to eat more.
• Sakumo tells Fang Xu to continue practicing at the Hatake household and join them for dinner from now on. The invitation deeply affects Fang Xu, who has lived alone and rarely experienced genuine elder care.
• Before leaving, Fang Xu privately resolves to prevent Sakumo’s tragic future, specifically his suicide after being destroyed by rumors and political pressure.
• When Fang Xu returns home, he discovers someone has entered despite the locked doors and windows.
• He finds Tsunade sitting in his living room, eating his snacks. After a brief exchange, Tsunade reveals that the Third Hokage wants her to take Fang Xu as her disciple.

Character Developments

• Fang Xu: Improves his swordsmanship, accepts the importance of building a strong foundation, and becomes emotionally attached to the warmth of Sakumo’s household. His determination to save Sakumo demonstrates growing loyalty and a willingness to alter the future.
• Kakashi: Confronts weaknesses hidden beneath his natural talent and speed. Sakumo’s criticism pushes him to take foundational training more seriously.
• Hatake Sakumo: Acts as a demanding but caring teacher and a warm parental figure. His invitation to Fang Xu reflects his acceptance of him into the family’s routine.
• Tsunade: Appears confident, perceptive, and playful. She easily detects Fang Xu’s feigned hostility and is introduced as his potential second mentor.
• Fang Xu and Tsunade: Their first interaction establishes a teasing, confrontational dynamic. Fang Xu remains calm and direct instead of being intimidated by Tsunade’s status.

Significant Themes

• The importance of fundamentals: Natural talent and speed cannot replace disciplined technique and a strong foundation.
• Mentorship and family: Training develops into emotional support, as Sakumo’s dinner invitation gives Fang Xu a sense of belonging.
• Changing fate: Fang Xu recognizes Sakumo’s doomed future and commits himself to preventing it.
• Isolation versus connection: Fang Xu’s solitary life contrasts with the warmth of the Hatake household.
• Perception and deception: Fang Xu attempts to hide his recognition of Tsunade, but she immediately reads his body language and exposes the act.

Important Character Interactions

• Sakumo corrects both students in different ways, tailoring his instruction to their weaknesses.
• Sakumo welcomes Fang Xu to dinner and offers him a continuing place in the household, while Kakashi silently accepts the arrangement.
• Fang Xu and Tsunade engage in a playful verbal contest after she breaks into his home and eats his snacks.
• Tsunade’s revelation that she may become Fang Xu’s disciple-master ends the chapter on a note of surprise and anticipation.

Chapter Summary: “Too Similar”

Key Plot Points and Events

• Tsunade visits Fang Xu, apparently considering whether to take him as a disciple, but Fang quickly realizes that she never truly intended to do so. He suspects the Third Hokage arranged the meeting because Fang is likely descended from the Senju.
• Fang explains that he inferred his Senju heritage from a family copy of Thousand Hands Swordsmanship Insights and from researching the Senju clan and Konoha’s history.
• He also admits to investigating Tsunade and bluntly concludes that she is laid-back and dislikes trouble, irritating her but demonstrating his calm, perceptive nature.
• Tsunade confirms that she will not accept him as a formal disciple, but gives him two valuable scrolls as a gift:

Shadow Clone Technique

Water Release: Water Wave Technique

• She warns Fang that Shadow Clones consume chakra and can be dangerous if used excessively, while Water Wave will help him develop his Water Release affinity.
• Tsunade urges Fang to make use of his talent, grow stronger, and survive the increasingly dangerous Shinobi World. She also tells him to seek her help at the Senju Residence or Ninja Hospital if he faces serious trouble.
• Before leaving, Tsunade asks Fang to call her “Sister Tsunade” rather than addressing her formally.
• Tsunade is struck by Fang’s resemblance to her late grandfather, Tobirama Senju, particularly his short hair, facial structure, and quiet demeanor.
• After Tsunade leaves, Fang privately reveals his excitement and gratitude. He recognizes the Shadow Clone Technique as a major training accelerator because its clones return their memories and experience when dispelled.

Character Developments

• Fang Xu is shown to be highly observant, analytical, and emotionally controlled. He can read others’ intentions, research his own heritage, and respond to Tsunade’s teasing without losing composure.
• His likely Senju ancestry becomes more firmly established, adding importance to his abilities and family history.
• Fang’s admiration and gratitude toward Tsunade deepen, despite their lack of a formal teacher-disciple relationship.
• He also demonstrates greater ambition: he immediately understands how Shadow Clones could improve his swordsmanship, ninjutsu, chakra control, and Lightning Mode training.
• Tsunade shifts from teasing and reluctant involvement to genuine concern for Fang’s future. Although she refuses to become his disciple, she offers meaningful instruction, resources, and protection.
• Her emotional reaction to Fang’s resemblance to Tobirama reveals lingering memories and reinforces Fang’s connection to the Senju legacy.

Significant Themes

• Heritage and identity: Fang’s investigation into his Senju ancestry connects him to Konoha’s founding clan and its historical figures.
• Mentorship beyond formal labels: Tsunade refuses the title of teacher but still supports Fang in practical and personal ways.
• Pragmatism and emotional restraint: Fang’s calm reasoning contrasts with Tsunade’s expressive temper, while also earning her respect.
• Survival and preparation: Tsunade emphasizes that talent is meaningless without strength and caution in a dangerous Shinobi World.
• The value of knowledge: The Shadow Clone Technique is portrayed primarily as a learning tool, capable of accelerating training rather than merely improving combat.

Character Interactions

• Fang and Tsunade engage in playful but tense banter, with Tsunade pinching his cheek after his unenthusiastic response and Fang calmly exposing her lack of interest in taking a disciple.
• Fang’s blunt description of Tsunade as laid-back provokes her irritation, but his honesty and intelligence ultimately impress her.
• Tsunade’s gifts and warning show that her concern for Fang is sincere, even though she does not want the responsibilities of formally mentoring him.
• Their relationship becomes more familial when Tsunade asks Fang to call her “Sister Tsunade,” reflecting his Senju connection and her growing affection.
• Tsunade’s recognition of Tobirama in Fang adds an emotional undertone to their farewell and hints that Fang may remind her of the Senju family she lost.

Chapter Summary

Key Plot Points and Events

• Fang Xu realizes his main limitation is his insufficient chakra reserves, since Shadow Clones divide his chakra and can quickly exhaust him.
• He prioritizes learning the Shadow Clone Technique over the Water Wave Technique.
• Thanks to his fused soul, stronger mental power, improved chakra control, and recent training, Fang Xu masters the technique in just over ten minutes.
• His first Shadow Clone immediately develops an independent personality and objects to being created merely to work before disappearing.
• The clone accuses Fang Xu of exploiting it, then deliberately disperses by slapping its own forehead. The resulting pain and memories return to Fang Xu, leaving him with a throbbing headache the next morning.
• Fang Xu continues his rigorous routine—running, taijutsu, and Lightning Body Tempering—despite the lingering pain.
• At school, his classmates question why he went home with Kakashi. Fang Xu reveals that Hatake Sakumo, the famous White Fang of the Leaf, accepted him as a disciple and will teach him Kendo.
• Kakashi clarifies that Sakumo considers Fang Xu a “Kendo genius,” shocking the class and intensifying everyone’s perception of Fang Xu’s rapid progress.

Character Development

• Fang Xu: Demonstrates exceptional learning ability, mental strength, and chakra control by quickly mastering Shadow Clones. He remains disciplined and committed to training, while his acceptance by Sakumo marks a major rise in status and skill.
• Shadow Clone: Displays unexpected self-awareness, independence, and philosophical concern over whether dispersal is equivalent to death. Its behavior adds humor while highlighting the unsettling nature of Shadow Clone consciousness.
• Kakashi: Quietly supports Fang Xu by correcting the others’ description of his talent and repeating Sakumo’s high praise.
• Kurenai: Is pleased by Fang Xu’s advancement but begins to worry that she may fall behind him.
• Asuma: Becomes increasingly jealous and competitive. His concern grows especially because he notices Kurenai paying more attention to Fang Xu.
• Obito: Reacts with shock and envy, wishing he could also be trained by a powerful ninja.

Significant Themes

• Power and limitations: Fang Xu’s lack of chakra reserves remains a serious obstacle, despite his rapidly improving skills.
• Growth through discipline: His progress comes from consistent training, refined chakra control, and focused study.
• Identity and consciousness: The Shadow Clone’s fear of disappearing raises questions about whether a clone with memories, emotions, and independent thought should be considered a separate self.
• Recognition and status: Becoming Sakumo’s disciple dramatically changes how Fang Xu is viewed by his classmates.
• Rivalry and jealousy: Fang Xu’s rapid rise creates pressure and insecurity in Kurenai and especially Asuma, setting up future competition.

Character Interactions

• Fang Xu and his Shadow Clone argue over the clone’s purpose and fate, ending with the clone’s dramatic self-dispersal.
• Kurenai, Rin, and Obito question Fang Xu about his connection to Kakashi.
• Fang Xu openly announces his apprenticeship under Sakumo.
• Kakashi confirms that Fang Xu is considered a Kendo genius, causing the class to react with surprise and admiration.
• Obito envies Fang Xu, while Kakashi teases him about his poor classroom discipline.
• Asuma silently compares himself to Fang Xu and resolves to challenge him, driven both by pride and his feelings for Kurenai.

Chapter Summary: “Outdoor Sparring!”

Key Plot Points and Events

• Suzuki Nakamura replaces the day’s theory lesson with an outdoor sparring test. Students are instructed to stop at the point of contact and avoid vital areas or serious injuries.
• Obito immediately challenges Kakashi, but Might Guy also claims Kakashi as his lifelong rival. Nakamura resolves the argument by pairing Kakashi against Guy in the first match.
• Kakashi and Guy engage in a fast-paced battle. Guy relies on relentless Taijutsu, while Kakashi uses precise Hatake swordsmanship and controlled movement. Kakashi eventually exploits an opening and wins by placing his sheathed blade against Guy’s shoulder and neck.
• Guy accepts the defeat cheerfully and vows to become stronger, while Kakashi recognizes that both Guy and Fang Xu are steadily catching up to him and decides to increase his own training.
• Kurenai defeats Rin using basic Genjutsu after noticing a momentary lapse in Rin’s concentration.
• Ebisu defeats Obito by exploiting his reckless fighting style with Shuriken, the Clone Technique, and a well-timed kick. Obito is humiliated but promises to win next time.
• The chapter ends as Asuma faces Fang Xu. Asuma has deliberately arranged the confrontation because he wants to defeat Fang Xu in front of Kurenai and prove his superiority.

Character Developments

• Kakashi demonstrates exceptional composure, technical precision, and tactical awareness. Although he wins comfortably, he realizes that Guy and Fang Xu are progressing quickly, motivating him to train harder.
• Might Guy shows major improvement in Taijutsu, combining speed, power, and the ability to adjust his attacks after being blocked. His optimism and determination remain unshaken by defeat.
• Obito remains impulsive and overconfident. His reckless attack allows Ebisu to defeat him, but his competitive spirit and desire to improve are clear.
• Ebisu displays stronger fundamentals and better tactical discipline than Obito, though his victory is accompanied by harsh, provocative remarks.
• Kurenai proves herself observant and technically skilled, using Genjutsu at exactly the right moment.
• Rin shows solid fundamentals and versatility but is vulnerable when her concentration slips.
• Asuma reveals that his challenge to Fang Xu is motivated partly by his feelings for Kurenai and his desire to appear stronger in her eyes.
• Fang Xu remains calm and confident, accepting Asuma’s challenge without being intimidated.

Significant Themes

• Hard work and perseverance: Guy’s response to defeat emphasizes that determination is more important than a single loss.
• Rivalry as motivation: Kakashi, Guy, Obito, and Asuma all use competition to push themselves toward greater strength.
• Technical skill versus aggression: The matches show that discipline, observation, and strategy can overcome reckless force.
• Continuous self-improvement: Even Kakashi, already one of the strongest students, recognizes the need to keep training as his classmates advance.
• Youthful ambition: The students’ declarations of rivalry, dreams of becoming Hokage, and eagerness to fight reflect their developing identities as ninja.

Character Interactions

• Obito and Kakashi exchange their usual rivalry, while Guy humorously competes with Obito for the right to challenge Kakashi.
• Kakashi and Guy share a respectful rivalry beneath their contrasting personalities: Guy is enthusiastic and expressive, while Kakashi is restrained but takes him seriously.
• Kurenai and Rin display friendly competition and mutual respect after their match.
• Ebisu taunts Obito after defeating him, while Rin prevents the confrontation from escalating.
• Asuma’s challenge to Fang Xu is closely tied to Kurenai’s presence, making the final match both a training contest and a personal test of pride.

Chapter Summary: “Instantly Defeating Asuma”

Key Plot Points and Events

• Asuma challenges Fang Xu, determined to prove that skill cannot be gained merely through words or having a powerful master.
• When the match begins, Asuma immediately attacks with multiple shuriken thrown along unpredictable high and low trajectories.
• Fang Xu calmly deflects nearly every projectile with his kunai, impressing the surrounding students.
• Asuma follows up with a rapid close-range assault, repeatedly striking at Fang Xu’s shoulders, ribs, and other openings.
• Fang Xu blocks every attack without losing his balance, demonstrating the improvement he has achieved through nearly two weeks of intense training.
• Asuma becomes increasingly frustrated and attacks with greater force. Fang Xu takes advantage of this impatience.
• Fang Xu activates his lightning ability, concentrating it into specific parts of his body to enhance his speed, strength, and balance rather than wasting energy through an uncontrolled discharge.
• In an instant, Fang Xu grabs Asuma by the collar, throws him to the ground, and presses a kunai against his throat.
• The fight ends almost immediately after Fang Xu uses the lightning enhancement, stunning the students and teacher alike.
• Suzuki Nakamura declares Fang Xu the winner.
• Afterward, Fang Xu helps Asuma stand rather than mocking him. Asuma acknowledges his defeat but vows to win next time.
• The two end the confrontation by forming the Seal of Reconciliation.

Character Developments

• Fang Xu: Shows major growth in physical ability, reaction speed, swordsmanship, ninjutsu, and control of his lightning power. He fights patiently and strategically, waiting for Asuma to overextend before delivering a decisive counterattack. His calmness and humility after winning also reveal strong character.
• Asuma: Begins the match confident and emotionally driven, especially because Kurenai is watching. His frustration causes him to attack recklessly, leading to his defeat. Although embarrassed, he accepts the loss honestly and maintains his determination to improve.
• Suzuki Nakamura: Recognizes that Fang Xu’s victory came from tactical timing and precise coordination rather than brute force. He is surprised by how dramatically Fang Xu has improved.
• Kurenai Yuhi: Watches the fight closely and becomes impressed—and emotionally affected—by Fang Xu’s strength and composure.
• Obito, Ebisu, and Rin: Represent the students’ growing shock and recognition that Fang Xu has become far stronger than expected.

Significant Themes

• Growth through discipline: Fang Xu’s improvement comes from sustained training and refined control, not simply from acquiring a powerful ability or master.
• Strategy over aggression: Fang Xu wins by defending patiently, studying Asuma’s movements, and exploiting his impatience.
• Control and precision: His lightning power becomes effective only after he learns to apply it selectively and efficiently.
• Humility in victory and perseverance in defeat: Fang Xu avoids humiliating Asuma, while Asuma accepts the loss and resolves to improve.
• Reputation versus actual ability: Asuma’s Sarutobi heritage and aggressive confidence cannot compensate for Fang Xu’s superior preparation and technique.

Character Interactions

• Fang Xu and Asuma’s rivalry drives the battle, with Asuma seeking to disprove Fang Xu and later promising revenge.
• Fang Xu and Asuma’s post-fight exchange transforms their conflict from pure hostility into mutual respect.
• Fang Xu’s performance draws admiration and surprise from the other students, especially Kurenai.
• Suzuki Nakamura’s evaluation confirms Fang Xu’s tactical maturity and highlights the significance of his transformation.

Chapter Summary: “Getting Competitive”

Key Plot Points and Events

• After Fang Xu defeats Asuma instantly in combat class using a precise Lightning Release technique, his classmates gather around him, impressed and curious about his sudden burst of speed.
• Fang Xu downplays the technique as only a “minor application” of Lightning Release chakra, further irritating the others because his overwhelming victory proves his confidence justified.
• Kurenai is pleased by Fang Xu’s progress but also feels pressured, realizing that if she advances at her current pace, she may soon fall far behind him.
• Asuma watches Fang Xu receive attention and feels humiliated, particularly after noticing Kurenai’s admiration. However, instead of making excuses or causing trouble, he accepts the defeat and resolves to surpass Fang Xu.
• The Third Hokage, Hiruzen Sarutobi, observes the match through his crystal ball. He is satisfied that Fang Xu has quickly mastered part of the Lightning Body Tempering Technique, but he is even more pleased that Asuma’s defeat motivates him to improve.
• That evening, Asuma approaches Hiruzen and sincerely asks to become stronger. He admits that being defeated publicly by Fang Xu—and losing face in front of Kurenai—has driven him to change.
• Hiruzen agrees to train Asuma personally and promises additional instruction from elite clan jonin when necessary. Asuma eagerly insists on beginning immediately, marking a major change in his attitude.
• Asuma’s mother, Biwako, watches the father and son leave for training and feels relieved that their long-standing conflict may finally improve.
• Kurenai also seeks out her father, Shinku Yuhi, and asks him to teach her how to become stronger because she does not want to fall behind Fang Xu.
• Shinku teasingly realizes that Fang Xu is the specific classmate motivating her. Embarrassed but sincere, Kurenai admits her interest in Fang Xu and explains his difficult background, rapid improvement, Lightning Release ability, White Fang’s mentorship, and victory over Asuma.

Character Developments

• Fang Xu: Demonstrates rapid growth and improved control over Lightning Release, defeating Asuma with speed and precision. His ability and understated confidence increase his influence among his classmates.
• Asuma Sarutobi: Experiences public humiliation but responds maturely rather than lashing out. His rivalry with Fang Xu becomes a source of motivation, and he takes the unprecedented step of asking Hiruzen for training.
• Kurenai Yuhi: Becomes increasingly aware of Fang Xu’s strength and her own fear of falling behind. Her admiration develops into openly acknowledged romantic interest, while also motivating her to pursue greater strength.
• Hiruzen Sarutobi: Recognizes Fang Xu’s talent and deliberately views the rivalry as beneficial for Asuma’s development. He becomes more supportive and patient with his son.
• Shinku Yuhi: Teases Kurenai about her feelings but ultimately learns how strongly Fang Xu has impressed her and is prepared to help her improve.
• Biwako Sarutobi: Serves as an observer of the family’s changing relationship and feels hopeful about the reconciliation between Asuma and Hiruzen.

Significant Themes

• Competition as motivation: Fang Xu’s victory inspires both Asuma and Kurenai to work harder rather than simply resent him.
• Growth through defeat: Asuma’s loss becomes a turning point, teaching him to acknowledge weakness and seek improvement.
• Parental guidance and reconciliation: Both Asuma and Kurenai turn to their fathers for instruction, while Hiruzen and Asuma begin repairing their strained relationship.
• Admiration and youthful rivalry: Fang Xu’s strength attracts respect and romantic interest, creating emotional and competitive tension among the classmates.
• Rapid personal transformation: Fang Xu’s rise forces those around him to reconsider their own abilities and goals.

Important Character Interactions

• Fang Xu and his classmates: Kurenai, Rin, Obito, and others question Fang Xu about his Lightning Release technique after witnessing his victory.
• Fang Xu and Asuma: Their fight establishes a new rivalry, with Asuma determined to defeat Fang Xu in a rematch.
• Asuma and Hiruzen: Asuma openly asks his father for training, and Hiruzen responds with encouragement and a commitment to personally guide him.
• Asuma and Biwako: Though they do not speak directly, Biwako’s reaction highlights her relief at seeing father and son cooperate.
• Kurenai and Shinku: Kurenai admits that Fang Xu motivates her, while Shinku playfully exposes her growing feelings.
• Kurenai and Fang Xu: Although Fang Xu is absent from their conversation, Kurenai’s admiration for him becomes clear through her description of his abilities, background, and achievements.

Chapter Summary: The Involution Storm

Key Plot Points and Events

• Kurenai tells her father, Shinku Yuhi, that she wants to become stronger so she will not fall too far behind Fang Xu and can eventually stand beside him.
• Shinku agrees to train her but warns that mastering genjutsu, taijutsu, and chakra control will be difficult and require commitment. He also intends to evaluate Fang Xu, whom he views as a talented rival for his daughter’s affection.
• The next morning, Kurenai joins Fang Xu during his regular morning run. She explains that Fang Xu’s rapid improvement inspired her to work harder, while also expressing her ambition to become a great kunoichi like Tsunade.
• Fang Xu accepts her decision and encourages her, warning that the unstable shinobi world makes self-reliance and strength essential. They agree to support one another during training.
• After the run, Fang Xu gives Kurenai his water flask, and they arrange to train together again the following morning.
• At the Academy, Rin learns that Kurenai trained with Fang Xu and decides to join them. Asuma and Obito also become motivated to train harder—Asuma to catch up with Fang Xu, and Obito so Rin will not think he is falling behind.

Character Developments

• Kurenai becomes more proactive and determined. Her feelings for Fang Xu motivate her, but she also develops a genuine desire for strength, independence, and a future as a capable kunoichi.
• Shinku Yuhi shifts from a protective, teasing father to a serious mentor. He is proud of Kurenai’s initiative but concerned about Fang Xu’s influence and intentions.
• Fang Xu demonstrates growing physical ability and emotional awareness. He recognizes Kurenai’s affection but avoids rushing into a romantic declaration, instead encouraging mutual support and practical preparation.
• Rin Nohara is inspired by Kurenai and Fang Xu to stop relying on others and begin training more seriously.
• Asuma Sarutobi remains jealous and frustrated after his defeat by Fang Xu, but accepts his weakness and resolves to improve.
• Obito Uchiha is motivated largely by his feelings for Rin and immediately decides to join the training effort.

Significant Themes

• Self-improvement and healthy competition: Fang Xu’s progress sparks a chain reaction in which Kurenai, Rin, Asuma, and Obito all commit to improving themselves.
• Independence and survival: Shinku and Fang Xu emphasize that shinobi—especially female ninja—must be able to protect themselves in an uncertain and dangerous world.
• Affection as motivation: Kurenai’s feelings for Fang Xu inspire her growth, while Rin’s presence motivates Obito.
• The beginning of a rivalry-driven training culture: One person’s advancement pushes nearly the entire group to work harder, creating the “involution” or escalating competition suggested by the chapter’s title.
• Balancing youth and danger: Though the characters are still young and romantic feelings remain mostly unspoken, the threat of future missions and wars forces them to mature early.

Important Character Interactions

• Kurenai and Shinku: Their conversation establishes Kurenai’s goals and Shinku’s willingness to train her while scrutinizing Fang Xu.
• Kurenai and Fang Xu: They run together, openly discuss their ambitions, and begin forming a closer partnership based on mutual encouragement.
• Kurenai and Rin: Kurenai’s example inspires Rin to join the morning training.
• Asuma and Fang Xu: Though they do not directly interact in this chapter, Fang Xu’s previous victory over Asuma strongly affects Asuma’s determination.
• Rin and Obito: Rin’s decision to train immediately motivates Obito to work harder so he will not fall behind her.

Chapter Summary: “The Third Exchange”

Key Plot Points and Events

• Fang Xu, Kurenai Yuhi, and Rin Nohara meet early in the morning to continue their running practice.
• Asuma Sarutobi joins them under the excuse that he was “just passing by,” though his softened reaction to Kurenai suggests he genuinely wants to participate.
• Obito Uchiha soon arrives after noticing Rin, immediately becoming energetic and declaring that he will one day be Hokage.
• The training group continues to expand. Might Guy joins two days later, followed by Ebisu, Genma Shiranui, Namiashi Raidō, and other students.
• The students’ competitive spirit spreads throughout the Ninja Academy. Morning runs, classroom participation, sparring, shuriken practice, taijutsu, and Three Body Technique training all increase dramatically.
• Students from other classes and grades also begin training harder, creating an academy-wide movement of voluntary overtraining.
• Hiruzen Sarutobi receives a report about the change and recognizes Fang Xu’s morning training as the starting point. He is especially pleased by Asuma’s newfound diligence and visible improvement.
• After a week, Fang Xu’s Exchange Talent cooldown reaches zero. He prepares to exchange a scroll containing the Lightning Release: Lightning Ball Technique.
• Fang Xu activates the exchange. The scroll disappears and his consciousness is transported to a forest in the Demon Slayer world.
• He witnesses Upper Rank One, Kokushibo, preparing to give demon blood to the desperate Kaigaku.
• The exchange interferes at the exact moment Kaigaku consumes the blood: Fang Xu’s ninjutsu scroll appears in Kokushibo’s hand, while Kaigaku begins screaming as the strength developed through his breathing techniques is forcibly taken from him.
• The chapter ends while the consequences of the third exchange are still unfolding.

Character Developments

• Fang Xu continues acting as the central catalyst for change. His disciplined training inspires both his close friends and the wider academy.
• Kurenai supports Fang Xu from the beginning and helps draw others into the group through her encouragement.
• Rin serves as an emotional motivator, particularly for Asuma and Obito.
• Asuma becomes noticeably more serious about training. His motivation appears partly connected to Kurenai, but Hiruzen also observes genuine personal improvement and pride in his son.
• Obito remains energetic, impulsive, and eager to impress Rin. Her encouragement immediately boosts his enthusiasm.
• Might Guy reinforces the chapter’s theme of effort and competition by joining the training movement.
• Hiruzen shifts from simply supervising his son to recognizing that Asuma is becoming self-motivated and responsible.
• Kokushibo is portrayed as cold and powerful, yet his willingness to accept Kaigaku reflects his own past decision to abandon humanity in pursuit of strength and survival.
• Kaigaku is characterized by overwhelming fear of death and selfish desperation. His desire to become a demon reveals that survival matters more to him than dignity or loyalty.

Significant Themes

• The influence of role models: Fang Xu’s actions inspire notable students, whose participation then motivates the rest of the academy.
• Healthy competition and collective improvement: Students train harder because they do not want to be surpassed, turning individual effort into an academy-wide phenomenon.
• Discipline versus fear-driven ambition: Fang Xu and the academy students improve through sustained effort, while Kaigaku seeks immediate power through desperation.
• The cost of power: Kaigaku expects demon blood to grant him strength, but the exchange strips away the abilities he previously developed, suggesting that power gained through desperate shortcuts may come at an unexpected price.
• Parallels between Kokushibo and Kaigaku: Kokushibo recognizes his former self in Kaigaku—both are willing to abandon humanity to avoid death and pursue greater strength.
• Cross-world consequences: Fang Xu’s exchanges are beginning to alter major events in another world, showing that his actions have effects beyond his immediate surroundings.

Important Character Interactions

• Kurenai warmly welcomes Rin and invites Asuma to train with them.
• Asuma’s attitude softens around Kurenai, hinting at his affection and giving him a personal reason to participate.
• Obito joins after seeing Rin and becomes especially motivated by her praise.
• Fang Xu lightly mocks Asuma’s obvious detour, adding humor to the group’s formation.
• Hiruzen evaluates the academy’s transformation and takes particular pride in Asuma’s progress.
• Kokushibo confronts Kaigaku’s fear and offers him demon blood, recognizing aspects of his own past in the younger man.
• Fang Xu’s exchange unexpectedly interrupts Kokushibo’s ritual, linking the Ninja Academy storyline directly to Kaigaku’s fate.

Chapter Summary: “Thunder Breathing”

Key Plot Points and Events

• Kaigaku, having lost the physical foundation and cultivation he once possessed as a Demon Slayer swordsman, accepts Kibutsuji Muzan’s demon blood from Kokushibo.
• Instead of transforming successfully, Kaigaku’s body grotesquely swells and deforms before exploding into a mass of flesh and blood.
• Kokushibo watches his death without sympathy, dismissing him as worthless and unqualified to become a demon.
• Kokushibo notices that Kaigaku’s strength had seemingly been drained before the demon blood entered his body. He suspects the mysterious scroll that appeared during the exchange was responsible.
• The scroll contains instructions for “Lightning Release: Lightning Ball Technique,” including concepts such as chakra and hand seals. Kokushibo cannot activate it, since he has no chakra, and concludes that it may originate from another world.
• He takes the scroll with him to show Muzan and leaves Kaigaku’s remains behind.
• Fang Xu watches the recorded exchange and recognizes Kokushibo and Kaigaku from the Demon Slayer world.
• A blue crystal materializes after the exchange. It contains Kaigaku’s Thunder Breathing training, swordsmanship experience, physical conditioning, and part of his cultivation.
• Fang Xu realizes that Kaigaku died because the exchange had extracted the very foundation that would have allowed his body to endure Muzan’s blood.
• Fang Xu consumes the crystal and immediately gains Kaigaku’s Thunder Breathing knowledge, combat instincts, bodily conditioning, and experience with several techniques.

Character Developments

• Kaigaku: His expected future as a powerful demon is abruptly destroyed. His arrogance and desperation are exposed when he begs for survival, but his body cannot endure the transformation after his training and physique are extracted. His death confirms his weakness and reinforces the consequences of his betrayal.
• Kokushibo: He remains cold, analytical, and ruthlessly pragmatic. Although he initially considers Kaigaku worth cultivating because of his Thunder Breathing, he quickly abandons that judgment after Kaigaku dies. His interest shifts to the mysterious scroll and its possible otherworldly origin.
• Fang Xu: He gains a much deeper understanding of the exchange’s mechanics and receives a major combat upgrade. By absorbing the crystal, he acquires Thunder Breathing as a bodily instinct rather than merely theoretical knowledge, greatly strengthening his physical ability, breathing, footwork, and swordsmanship.

Significant Themes

• Power and physical foundations: Strength is not merely talent or potential; it depends on the body and accumulated training. Once Kaigaku’s foundation is removed, even Muzan’s blood becomes fatal.
• The cost of betrayal and weakness: Kaigaku’s treachery and cruelty contrast with his helpless death, which Fang Xu views as deserved.
• Cross-world incompatibility: Kokushibo’s inability to use Lightning Release highlights the differences between the Demon Slayer and Shinobi systems, particularly Thunder Breathing versus chakra-based techniques.
• Exchange and transformation: The exchange does not simply transfer objects; it extracts cultivation, experience, and physical potential, reshaping the destinies of both the giver and receiver.
• Combining power systems: Fang Xu recognizes that Thunder Breathing could complement his real lightning abilities from the Rumble-Rumble Fruit and Lightning Release techniques.

Character Interactions

• Kaigaku and Kokushibo: Kaigaku begs Kokushibo to save him and insists he can endure the transformation, but Kokushibo offers no assistance or compassion. After Kaigaku dies, Kokushibo labels him “trash” and says he did not even qualify to become a demon.
• Kokushibo and the scroll: Kokushibo investigates the scroll after noticing its suspicious appearance and its connection to Kaigaku’s collapse. His failed attempt to use Lightning Release emphasizes the limitations of his own power system.
• Fang Xu and Kaigaku’s legacy: Though Fang Xu never meets Kaigaku directly, he benefits from the exchange by inheriting Kaigaku’s combat experience and physical refinement. He feels no guilt over Kaigaku’s death and considers the exchange highly worthwhile.
• Fang Xu and his existing training: Thunder Breathing enhances, but does not replace, the Kendo foundation taught by Hatake Sakumo. Fang Xu recognizes that Thunder Breathing and Hatake swordsmanship belong to different systems and are not directly comparable.

Chapter Summary: “Success”

Key Plot Points and Events

• Fang Xu’s Attribute Panel updates after his recent experience:
  • His physique improves significantly.
  • Beginner Swordsmanship advances to Proficient Swordsmanship.
  • He gains Proficient Thunder Breathing.
  • His body’s carrying capacity increases, allowing him to withstand more power.
• He estimates that his physical strength has at least doubled, with improved reactions, coordination, and lung capacity. This makes his Rumble-Rumble Fruit abilities and Lightning Mode more stable and powerful.
• Concerned that the Third Hokage might observe him through the Telescope Technique, Fang Xu avoids training at home. He takes the long blade gifted by Hatake Sakumo and travels to a secluded forest training ground.
• He tests Thunder Breathing Forms Two through Six:
  • Second Form: Rice Spirit severs five trees in rapid succession.
  • Third Form: Thunder Swarm surrounds and destroys a large tree with repeated slashes and real lightning.
  • Fourth Form: Distant Thunder launches a long-range electric slash.
  • Fifth Form: Heat Lightning combines lightning and intense heat to scorch a tree.
  • Sixth Form: Rumble and Flash unleashes a barrage of high-speed attacks that devastates multiple trees.
• Fang Xu realizes that Kaigaku’s extensive training has given him a strong foundation in Forms Two through Six, even though Kaigaku could never master the First Form.
• He attempts Thunder Breathing, First Form: Thunderclap and Flash, combining the technique with the Rumble-Rumble Fruit’s real lightning.
• The attack succeeds, allowing Fang Xu to cross more than ten meters instantly and punch a lightning-charged blade through a tree trunk.
• Fang Xu concludes that Thunder Breathing is only the beginning. He plans to combine swordsmanship, breathing techniques, lightning powers, chakra, and Nintaijutsu to develop an entirely new combat style.

Character Development

• Fang Xu gains confidence after confirming that his strengthened body can safely support far greater power.
• He demonstrates rapid mastery of Thunder Breathing, using the techniques as though he has practiced them for years.
• Successfully learning Thunderclap and Flash distinguishes him from Kaigaku and proves that his unique combination of abilities allows him to overcome limitations that others could not.
• His ambitions expand from copying existing techniques to creating a personalized lightning-based system.
• Fang Xu becomes more cautious and strategic, taking precautions against surveillance while continuing to pursue dangerous experimentation.

Significant Themes

• Growth through integration: Fang Xu’s strength comes from combining multiple systems—breathing, swordsmanship, chakra, Nintaijutsu, and Devil Fruit abilities—rather than relying on one source of power.
• Overcoming inherited limitations: Kaigaku’s failure to learn the First Form does not define Fang Xu’s potential. Fang Xu’s different talents let him surpass an established limitation.
• Physical foundation and mastery: The chapter emphasizes that increased bodily capacity is just as important as acquiring new techniques.
• Innovation versus imitation: Fang Xu begins by using Kaigaku’s Thunder Breathing knowledge but quickly moves toward developing a unique lightning combat path.
• Controlled experimentation: His secrecy and careful choice of training ground show the tension between ambition and the need to conceal his abilities.

Character Interactions

• Hatake Sakumo: His gift of the long blade enables Fang Xu to practice Thunder Breathing sword techniques more effectively.
• The Third Hokage: Though absent, he influences Fang Xu’s actions through the threat of surveillance via the Telescope Technique.
• Kaigaku: He does not appear directly, but his training experience provides Fang Xu with the knowledge behind Forms Two through Six. Fang Xu also surpasses Kaigaku by successfully mastering Thunderclap and Flash.

Chapter Summary: “Danzo Makes His Move”

1. Key Plot Points and Events

• Fang Xu tests the combination of his abilities in a secret training base: Thunder Breathing, the Rumble-Rumble Fruit, Lightning Mode, and Lightning Release Chakra.
• He discovers that each power enhances a different aspect of his fighting style:
  • Thunder Breathing controls his breathing, movement, and swordsmanship.
  • Lightning Mode increases his physical explosiveness.
  • The Rumble-Rumble Fruit provides genuine lightning power.
  • Lightning Release Chakra stabilizes and directs the lightning through his sword.
• His combined slash destroys a tree with both the blade and lightning, proving that his techniques have advanced significantly.
• After absorbing Kaigaku’s Thunder Breathing Crystal, Fang Xu’s physical endurance and combat capacity have greatly improved. His elementalization and high-intensity lightning output can now last more than twice as long as before.
• Fang Xu returns home, checks for surveillance, and reviews his Attribute Panel. He is assessed as an Elite Chunin who can briefly fight an ordinary Jonin at full strength, though his foundation still needs improvement.
• He resolves to focus on physical training, consolidate his swordsmanship and Lightning Mode, and avoid becoming overconfident.
• Meanwhile, Danzo receives a report confirming that Hatake Sakumo has taken Fang Xu as his disciple. He learns about Fang Xu’s sudden growth, his self-created Lightning-Attribute Nintaijutsu, his draw with Kakashi, and the interest shown by Hiruzen and Tsunade.
• Danzo begins viewing Fang Xu as a potential future ally and source of influence for Sakumo, increasing his concern about Sakumo’s growing prestige.

2. Character Developments

• Fang Xu: Makes a major leap in strength and technical understanding. He learns how to integrate his different abilities rather than using them independently. Despite his excitement, he remains cautious and recognizes that being able to briefly challenge a Jonin does not mean he can defeat one.
• Danzo: Becomes increasingly wary of both Fang Xu and Hatake Sakumo. He sees Fang Xu’s talent and connections as a possible threat to his own political interests and begins considering how to respond.
• Hatake Sakumo: Although absent from the immediate scenes, his influence is emphasized through his decision to accept Fang Xu as a disciple and his growing reputation as a possible future Hokage candidate.
• Tsunade and Hiruzen: Their interest in Fang Xu confirms that he is becoming an important and closely watched young talent within Konoha.
• Takuma: Functions as Danzo’s intelligence operative, delivering a detailed and emotionally neutral report.

3. Significant Themes

• Power through integration: Fang Xu’s greatest improvement comes from combining multiple systems of power into one coordinated fighting style.
• Physical foundation: The chapter stresses that bodily strength and endurance determine how much power a person can safely use.
• Growth tempered by caution: Fang Xu celebrates his progress but understands the gap between an evaluation and real combat experience.
• Talent and political influence: Fang Xu’s abilities attract powerful mentors and political attention, showing that exceptional talent can affect village power structures.
• Threat of rising figures: Danzo’s concern reflects the conflict between personal ambition, institutional control, and the emergence of new leaders.
• Preparation versus overconfidence: Fang Xu chooses consolidation and training rather than rushing toward greater power.

4. Character Interactions

• Fang Xu and his abilities: He experiments methodically with how Thunder Breathing, lightning chakra, Lightning Mode, and the Rumble-Rumble Fruit can complement one another.
• Fang Xu and his Attribute Panel: The panel provides an objective assessment of his rapid progress while warning him that his foundation remains incomplete.
• Fang Xu and his mentors: Sakumo’s swordsmanship training and Tsunade’s contributions of Shadow Clone and Water Release techniques are identified as major factors in his development.
• Danzo and Takuma: Takuma reports Fang Xu’s background and recent activities, while Danzo interprets the information in the context of Konoha’s political balance.
• Danzo and Sakumo: Though they do not meet directly, Danzo views Sakumo’s rising reputation and Fang Xu’s discipleship under him as a developing threat that may require intervention.

Chapter Summary: “True Genius”

Key Plot Points and Events

• Danzo orders Root operative Takuma to monitor Fang Xu, recognizing the six-year-old’s exceptional talent, leadership, and growing influence among Academy students.
• Danzo considers Fang Xu a valuable potential Root asset. He wants to remove the boy’s emotional attachments and turn him into an obedient weapon, but decides not to act immediately because Fang Xu is being watched by Hiruzen, trained by Hatake Sakumo, and supported by Tsunade.
• Danzo directly approaches the Third Hokage and demands that Fang Xu be transferred to Root, arguing that the boy’s Lightning Release talent, original Nintaijutsu, and Kendo aptitude are being wasted at the Academy.
• Hiruzen firmly refuses, rejecting Danzo’s belief that children should be stripped of emotions and turned into tools. He emphasizes that Fang Xu is an orphan, Sakumo’s disciple, and connected to Tsunade and the Senju bloodline.
• Their argument exposes the growing conflict between Hiruzen’s desire to protect the village’s children and Danzo’s increasingly aggressive expansion of Root. Hiruzen realizes that Danzo’s influence has become dangerous and decides Fang Xu’s case may provide an opportunity to restrain him.
• In Root’s underground base, Danzo studies Fang Xu’s old records and becomes especially concerned after confirming that he is a descendant of a Senju branch family whose members had blended into Konoha’s civilian population.
• Unable to seize Fang Xu openly, Danzo decides to manipulate Hiruzen by creating suspicion toward Sakumo and Fang Xu.
• Danzo returns to Hiruzen with Fang Xu’s bloodline information, asking whether Hiruzen can truly feel safe leaving such a talented Senju descendant in Sakumo’s hands. The chapter ends with this attempt to sow distrust.

Character Developments

• Danzo: Revealed as calculating, ruthless, and increasingly threatened by Fang Xu’s potential. He sees the child not as a person but as a weapon or strategic resource. His concern is intensified by Fang Xu’s Senju ancestry and his connection to Sakumo, whose reputation may rival Hiruzen’s.
• Hiruzen Sarutobi: Becomes more openly opposed to Danzo’s methods. Though he has tolerated Root for political and military reasons, Fang Xu’s situation convinces him that Danzo’s power must be curbed. He strongly defends Fang Xu’s humanity and autonomy.
• Fang Xu: Does not appear directly, but his reputation expands significantly. He is portrayed as unusually mature, hardworking, talented, socially connected, and capable of leading his peers despite his young age.
• Takuma: Functions as Danzo’s loyal operative, following orders to observe Fang Xu without exposing Root’s interest.
• Hatake Sakumo and Tsunade: Their influence over Fang Xu makes him more politically significant and creates obstacles for Danzo’s plans.

Significant Themes

• Person versus weapon: The central conflict is whether talented children should be nurtured as individuals or stripped of emotion and turned into tools for the village.
• Power and control: Danzo’s attempt to claim Fang Xu reflects his broader effort to expand Root’s authority beyond its accepted limits.
• Political rivalry: Fang Xu’s talent becomes entangled in the tension between Hiruzen and Danzo, as well as the growing prestige of Sakumo.
• Bloodline and legacy: Fang Xu’s hidden Senju heritage makes him more valuable and more threatening in Danzo’s eyes, showing how lineage continues to influence Konoha’s politics.
• Manipulation and mistrust: When direct action is impossible, Danzo turns to psychological pressure and attempts to make Hiruzen distrust Sakumo and Fang Xu.

Character Interactions

• Danzo and Takuma: Danzo instructs Takuma to monitor Fang Xu cautiously and avoid direct contact until Root can act without exposing itself.
• Danzo and Hiruzen: Their confrontations reveal their opposing philosophies. Danzo prioritizes military efficiency and obedience, while Hiruzen insists that Fang Xu is a child and not merely a weapon.
• Danzo and Fang Xu’s records: Danzo’s investigation into the boy’s Senju ancestry transforms his interest from strategic curiosity into deeper suspicion and urgency.
• Danzo, Sakumo, and Tsunade: Though they do not appear together, their connections to Fang Xu create a power struggle. Danzo fears that Sakumo’s mentorship and Tsunade’s support will strengthen Fang Xu and further elevate Sakumo’s standing.

Chapter Summary: “Stronger...”

Key Plot Points and Events

• Danzo confronts Hiruzen Sarutobi, arguing that Hatake Sakumo’s growing prestige, Hokage-like authority, and mentorship of Fang Xu threaten Hiruzen’s position.
• Danzo emphasizes that Fang Xu is a Senju descendant with considerable potential and demands that Root take control of his training.
• Hiruzen rejects Danzo’s proposal, defending Sakumo’s reputation and insisting that Fang Xu’s place as an Academy student and Sakumo’s disciple is legitimate.
• Hiruzen warns Danzo that the Ninja Academy is off-limits to Root interference. Danzo leaves angrily, threatening that Hiruzen will regret refusing him.
• Alone, Hiruzen recognizes that Root’s influence is expanding dangerously—from clan members and orphans to Academy children—and resolves to protect the Academy.
• At the Hatake residence, Fang Xu demonstrates rapid improvement in Kendo. His technique has become smoother, more efficient, and nearly equal to Kakashi’s.
• Fang Xu unveils a new form of Lightning-Attribute Ninja Swordsmanship, integrating Lightning Release with his breathing, movement, footwork, and sword strikes.
• His lightning-enhanced slash cuts through a wooden post and allows him to move and attack with greatly increased speed and power.
• Kakashi is stunned by Fang Xu’s progress, realizing that the two are no longer evenly matched.
• Sakumo identifies Fang Xu’s achievement as more than simple Lightning Release enhancement: Fang Xu is learning to understand lightning and incorporate it into his body and swordsmanship.
• Fang Xu modestly explains that his technique combines family insights, Sakumo’s instruction, and Lightning Body Tempering principles rather than being created entirely from nothing.

Character Developments

• Hiruzen: Reveals his growing concern about Danzo’s expanding influence but firmly establishes a boundary by protecting the Ninja Academy and refusing to surrender Fang Xu.
• Danzo: Becomes increasingly aggressive and politically suspicious, viewing Fang Xu as a potential asset for Root and a possible threat if he remains loyal to Sakumo.
• Sakumo: Gains even greater respect for Fang Xu, recognizing him as an exceptional genius whose mind and body develop together unusually quickly.
• Fang Xu: Demonstrates extraordinary learning ability and creates a unique lightning-based sword style. His rapid mastery places him close to or beyond Kakashi’s level in certain fundamentals.
• Kakashi: Experiences surprise and discomfort as Fang Xu’s growth surpasses his expectations. Though competitive, he cannot deny Fang Xu’s talent and Sakumo’s praise of him.
• Fang Xu and Sakumo’s relationship: Their teacher-student bond strengthens as Sakumo observes and acknowledges Fang Xu’s creative potential.

Significant Themes

• Political control versus personal loyalty: Danzo wants Fang Xu’s loyalty directed solely toward the village and Hokage, while Hiruzen defends the legitimacy of personal mentorship and individual bonds.
• The danger of unchecked authority: Root’s expansion into the Academy represents Danzo’s increasing willingness to control vulnerable or talented young people.
• Talent and accelerated growth: Fang Xu’s development illustrates the difference between ordinary practice and exceptional comprehension, with his body able to immediately realize what his mind understands.
• Innovation through synthesis: Fang Xu’s new swordsmanship emerges by combining existing knowledge, instruction, and personal experimentation rather than inventing techniques in isolation.
• Competition and recognition: Kakashi’s reaction reflects the tension between rivalry and respect, while Sakumo openly acknowledges Fang Xu’s genius.
• Power and political symbolism: Sakumo’s prestige, Fang Xu’s Senju heritage, and their growing partnership are portrayed as factors that could influence Konoha’s future leadership.

Important Character Interactions

• Hiruzen and Danzo: A tense ideological confrontation over Fang Xu, Root’s authority, and the limits of political control. Hiruzen rejects Danzo’s utilitarian approach.
• Sakumo and Kakashi: Both observe Fang Xu’s training, but while Kakashi reacts with shock and insecurity, Sakumo analyzes the technical depth of Fang Xu’s progress.
• Sakumo and Fang Xu: Sakumo praises Fang Xu’s breakthrough, while Fang Xu responds humbly and credits his teacher and prior knowledge.
• Fang Xu and Kakashi: Their rivalry intensifies as Fang Xu’s new lightning-enhanced swordsmanship appears to give him an advantage over Kakashi.