Chapter Summaries

Plot points and events

• Ikuko summons Nai to see Clan Head Hyuga Feng, assuring her that her younger brothers will be taken home.
• Feng claims he needs Nai’s help, then has her injected with a mysterious blue substance. A lab-coated man, Sano, assists; Feng orders him to place Nai in nutrient solution so they can later fuse her Byakugan.
• Nai realizes she has been betrayed and fears she will never see Yui again. The forehead protector Yui gave her falls as she loses consciousness.
• Meanwhile, Yui wakes in her sealed room, eats food that has inexplicably appeared there, and returns to researching ninjutsu.
• Seeking a way to fly, Yui experiments with releasing Wind Release chakra beneath her feet. After an unstable first attempt, she develops a more controlled technique using three hand seals: Wind Release: Wind-Riding Technique.
• Yui celebrates her success but cannot know what has happened to Nai. She assumes Nai is safe and will visit soon.

Character developments

• Nai is trusting and dutiful, agreeing to help Feng, but recognizes the betrayal too late. Her final thoughts are focused on Yui.
• Yui shows creativity and persistence, turning an original idea into a working flight technique through experimentation and improved chakra control.
• Hyuga Feng is revealed as cruel and willing to exploit Nai for a Byakugan-fusion experiment. Sano appears to be his accomplice.

Significant themes

• Betrayal and vulnerability: Nai’s trust in her clan leadership is used against her.
• Innovation through experimentation: Yui develops new ninjutsu by testing ideas, learning from failure, and refining her technique.
• Separation and foreboding: The chapter contrasts Yui’s hopeful expectations with Nai’s sudden disappearance, creating dramatic irony.

Character interactions

• Ikuko escorts Nai to Feng, while reassuring her about her brothers.
• Feng deceives Nai before Sano injects and removes her.
• Yui’s thoughts repeatedly turn to Nai, underscoring their bond; Nai likewise thinks of Yui as she loses consciousness.

Plot points and events

• Three days after being expected to die within two, the experimental white mouse is still alive—and unusually lively. Yui, the clone left to run the laboratory, discovers that the mouse can speak.
• The mouse says that after Yui knocked her unconscious, unfamiliar memories appeared in her mind, giving her the ability to think and talk. She cannot explain the memories, apparently being unable to put their contents into words.
• Suspecting the mouse may be an Elder Monster, Yui offers to make her a summon. The mouse accepts, believing Yui’s role in awakening her memories gave her a second life.
• They complete a contract using a drop of blood from Yui’s original self. A golden light surrounds the mouse, confirming the bond.
• Yui impulsively kisses the mouse because she finds her cute, embarrassing them both. Soon after, she realizes her original self has stayed home for three days instead of visiting the lab as usual.
• Concerned that something unexpected has happened, Yui decides to investigate at night and brings the mouse along. The mouse objects to being called “Little White,” so Yui postpones naming her until they meet her original self.

Character developments

• Yui (the clone) shifts from scientific curiosity to treating the mouse as a potential companion and summon. She remains casual and impulsive, but becomes concerned when she notices her original self’s unusual absence.
• The white mouse proves intelligent, grateful, and eager for a bond with Yui. She gains a new identity through awakening and contracting, though she has not yet revealed the contents of her memories.

Significant themes

• Transformation and second chances: The mouse’s awakening gives her a new life beyond her expected role as a test subject.
• Memory and mystery: The unexplained memories hint at the mouse’s unusual nature, while their contents remain inaccessible.
• Companionship and loyalty: The mouse accepts Yui as master out of gratitude and fairness, and the contract formalizes their connection.
• Care mixed with comedy: Yui’s scientific detachment contrasts with her impulsive affection and the mouse’s earnest reactions.

Character interactions

• Yui questions and tests the talking mouse, then offers her a place as a summon.
• The mouse expresses gratitude, asks to be released, and guides Yui through the blood-based contract.
• Their awkward, affectionate exchange—including Yui’s kiss and the mouse’s embarrassment—establishes a playful bond.
• The mouse challenges Yui’s proposed name, and the pair set off together to investigate what has happened to Yui’s original self.

Plot points and events

• Hiruzen receives an ANBU report that two girls he had ordered investigated have disappeared, while Hyuga Feng has been behaving strangely. The information makes Feng’s explanation seem more plausible, but Hiruzen remains cautious and orders Taji to secretly watch him.
• In the Hyuga Branch Family, Yui works out that food is being summoned into her sealed room, suggesting the seal does not prevent spatial transport. However, she knows no Space-Time Ninjutsu that could help her escape.
• Yui’s Shadow Clone arrives with Little White Mouse. The mouse identifies the barrier as an intermediate chakra-absorbing sealing jutsu, explains how it redirects excess energy, and admits it cannot break the seal yet.
• Instead, the mouse uses a temporary golden technique to open a vortex in the wall, allowing the clone to communicate with the trapped Yui. The connection can last only about fifteen minutes.
• The original Yui, who had sensed the clone but received no dispelled-clone memories, is startled by the voice and asks how the clone reached her.

Character developments and interactions

• Hiruzen remains politically cautious: he is willing to tolerate the Hyuga so long as they do not go too far, but orders discreet surveillance of Feng.
• Yui’s Shadow Clone is relieved to find the original and increasingly worried about her—and about Nai Hyuga, whom she fears may have discovered the sealed room.
• Little White Mouse reveals hidden expertise in sealing jutsu and a strong desire to prove itself. Though it cannot free Yui, it finds a way to establish contact.
• The mouse’s confidence softens when it admits its current limits; Yui comforts it, strengthening their affectionate master-and-companion bond.
• The original and clone finally make contact, opening the possibility of coordinating despite the barrier.

Significant themes

• Secrecy and surveillance: Hiruzen’s covert monitoring mirrors Yui’s effort to uncover what is happening around her.
• Knowledge versus power: Understanding the seal does not immediately provide a way out; the mouse’s expertise is constrained by its present strength.
• Trust and emotional support: Yui responds to the mouse’s failure with encouragement, and its loyalty helps bridge the gap between the two versions of her.

• Yui checks on Nai: After hearing her Shadow Clone’s report about a laboratory mouse awakening an ancient bloodline, Yui asks the clone to investigate Nai Hyuga’s unexplained absence and find a way to remove Yui’s seal. She also asks for a Summoning Technique scroll. The exhausted mouse collapses after helping open the sealed passage; Yui feeds her chakra, and the mouse falls asleep in Yui’s pocket. Yui then goes to Nai’s home.
• Feng’s eye transplant goes wrong: In the Hyuga underground laboratory, Clan Head Hyuga Feng celebrates the power he expects from a transplanted pair of eyes. Sano tries to sedate him, but Feng becomes increasingly agitated. A hidden figure slips through the disordered room unnoticed. Sano injects Feng with the remaining sedative, taken from a syringe in Nai’s arm.
• Nai learns the truth: Coming around, Nai realizes she has lost her eyes and demands to know why Feng took them. Feng explains that they belonged to his younger sister, who died as a child, and that he used Nai as a vessel while experimenting with a way to fuse Byakugan. He reveals that Nai’s identity, status, and supposed parents were all invented; he chose her for her chakra potential and treated her as expendable.
• Nai’s emotional collapse: Nai is devastated less by the fabricated family history than by Feng’s total betrayal. Her hope of changing the Hyuga Clan collapses, and she fears Yui might also have been part of the deception. Feng dismisses their friendship but says Yui is genuinely talented, viewing her mainly as a future means of continuing the clan’s bloodline.
  Character developments and themes: Yui shows care for both Nai and the mouse, while the mouse’s loyalty is clear in her exhausting effort to help. Nai’s trust and idealism are shattered by Feng’s cruelty. Feng is revealed as arrogant and ruthlessly willing to exploit others in pursuit of power. The chapter centers on betrayal, fabricated identity, exploitation, and the corrupting pursuit of power.

Key plot points

• Nai Hyuga confirms that Yui is real and protests when Hyuga Feng proposes using her as a tool. Enraged by Nai’s defiance, Feng changes his mind about killing her and orders Sano to put her in the Byakugan crystal sphere’s “white water,” a liquid that converts matter into nutrients. Sano objects that this could disrupt the sphere, but obeys; Nai is thrown into the liquid and suffers intense itching.
• A hidden observer slips away from the laboratory, while Yui searches the Hyuga Training Ground and other likely places for Nai without success. She decides to ask the Third Hokage, Hiruzen Sarutobi, about her disappearance.
• Before Yui arrives at Hiruzen’s office, an ANBU reports Feng’s secret Byakugan fusion and human experiments. Hiruzen orders continued surveillance and evidence-gathering. Though he is disturbed, he hesitates to move against Feng immediately because Feng leads the Hyuga Clan.
• Yui asks whether Nai has gone on a mission. Hiruzen chooses to conceal what happened, fearing Yui’s closeness to Nai might lead her to confront Feng. He considers using the mission explanation to delay her.

Character developments and interactions

• Nai remains defiant despite her dire situation, prioritizing Yui’s safety over her own. Her resistance provokes Feng and leads to her being subjected to the white water.
• Hyuga Feng reveals his cruelty and ambition, treating people as resources for his experiments. Sano shows some hesitation but ultimately submits to his authority.
• Yui demonstrates loyalty and initiative by searching for Nai and approaching the Hokage, though she remains unaware of the danger Nai is in.
• Hiruzen is alarmed by Feng’s actions but balances his concern with political caution. His decision to withhold the truth puts him at odds with Yui’s need to know.

Significant themes

• Power and abuse: Feng uses clan authority to pursue unethical experiments and intimidate subordinates.
• Loyalty and defiance: Nai’s concern for Yui and refusal to submit persist even when she is powerless.
• Secrecy and political caution: Hiruzen’s concealment may protect Yui temporarily, but it also leaves her ignorant and delays direct action.

Key plot points and events

• Yui’s Shadow Clone visits Hokage Hiruzen Sarutobi to ask about Nai Hyuga. Hiruzen confirms Nai left the village on a mission and may be gone for months; he recognizes that Yui is a clone.
• Reassured that Nai is safe, Yui turns to finding a way to free her original body from the Hyuga compound and eventually remove the Caged Bird Seal. She hopes a sleeping white mouse may help, but it has not awakened.
• Over several days, Yui studies chakra transformation and attempts to develop Space-Time Ninjutsu, without success. She does make progress with Water Release, compressing a large amount of chakra into a small, ice-like sphere that would unleash a powerful torrent—but creating it exhausts her chakra.
• Yui’s clone searches Konoha’s shops for a Summoning Technique scroll, hoping to summon the original body out of confinement. The shopkeeper explains that the technique cannot be bought and must be taught by an instructor, followed by a summoning contract.
• Instead, Yui buys two techniques suited to her affinities: the defensive B-rank Water Formation Wall and the offensive C-rank Gale Palm. They cost 100,000 ryo in total, leaving her privately distressed at having spent all her money. She also learns how to use the storage scroll holding them.
• As Yui leaves the shop, an unseen observer recognizes her and wonders how she escaped.

Character development

• Yui is resourceful and proactive, using a Shadow Clone to gather information and continuing to seek ways out of her predicament. Her experiments show growing skill, though her lack of progress with Space-Time Ninjutsu frustrates her. She also reveals a practical, entrepreneurial streak when she realizes how profitable selling ninjutsu could be.
• Hiruzen is observant enough to identify Yui’s clone, but lets the encounter pass without confronting her.
• The shopkeeper is eager to make a sale but patiently explains both the limits on buying Summoning Technique and how storage scrolls work.

Significant themes

• Ingenuity under constraint: Yui uses clones, research, and shopping to work around her confinement and lack of access to specialized instruction.
• The cost of power: Useful techniques are expensive, while Yui’s self-developed water technique consumes all her chakra.
• Knowledge and access: Some abilities cannot simply be purchased; they depend on instructors, contracts, clan inheritance, or individual invention.

Character interactions

• Yui’s brief meeting with Hiruzen confirms Nai’s safety, while Hiruzen silently recognizes her clone.
• Yui bargains with the shopkeeper for information and techniques; he refuses to sell a Summoning Technique but helps her choose and purchase other jutsu.
• The chapter ends with an unidentified figure watching Yui leave, setting up a possible confrontation or revelation.

Key plot points and events

• The Toad Sage gives Jiraiya two prophecies. One says that a pale-skinned, horned woman with glowing blue eyes will dramatically alter his destiny; another prophecy will be revealed when he returns to Mount Myōboku in five years.
• Jiraiya leaves Mount Myōboku, turning down Fukasaku’s offer of a bug meal.
• At Training Ground No. 7, Yui’s Shadow Clone practices Water Release: Water Formation Wall. As she prepares to leave, a small toad appears and performs the Summoning Technique, bringing Jiraiya back to Konoha.
• Yui recognizes the technique and memorizes its hand seals, pleased to have found the jutsu she wanted to learn.
• Jiraiya recognizes Yui from their Ninja Academy days. He briefly wonders if she resembles the woman in his prophecy, but decides she does not fit its description.

Character developments

• Jiraiya receives an intriguing but cryptic glimpse of his future, which leaves him curious but uncertain.
• Yui makes progress with Water Release and gains an unexpected opportunity to learn the Summoning Technique.
• Yui’s patience with Jiraiya quickly wears thin when his gaze becomes lecherous.

Significant themes

• Prophecy and fate: Jiraiya’s future may be shaped by a mysterious woman, though the prophecy’s meaning remains unclear.
• Unexpected opportunity: Yui’s search for the Summoning Technique pays off through an unforeseen encounter.
• Humor and embarrassment: Jiraiya’s crude behavior clashes with Yui’s growing anger.

Character interactions

• The Toad Sage speaks cryptically to Jiraiya, while Fukasaku tries to persuade him to stay for a meal.
• Yui and Jiraiya reunite after years apart. Their recognition is initially awkward, and Yui has to remind him of her name.
• Jiraiya’s intrusive staring makes Yui cover herself and confront him.

Key plot points

• Jiraiya offers to teach Yui ninjutsu, but she postpones, wary that using more chakra will make her Shadow Clone vanish while her original self remains trapped. She asks whether the Summoning Technique can transport a Shadow Clone; Jiraiya is unsure and suspects a contract is required.
• Back at her laboratory, Yui finds Little White Mouse awake. When she asks about summoning contracts, it recalls that their existing bond is a “bloodline contract.”
• Yui tests whether that contract can support summoning. Using the seals she learned, she successfully summons Little White Mouse out of its cage.
• Yui learns that Little White Mouse can use chakra but has no ninjutsu training. She asks it to learn the Summoning Technique so it can summon her original self from the room where she is trapped. Little White Mouse readily agrees, and Yui begins teaching it.
• Later, Yui develops Water Release: Multiple Water Extremes, a formation of many weaker water spheres that costs about as much chakra as one Water Extreme. She notes that her repertoire of ninjutsu and taijutsu remains limited.

Character developments and interactions

• Yui is resourceful and persistent, adapting the unusual bloodline contract to solve her summoning problem. Her excitement leads her to kiss and embrace Little White Mouse, who is startled and embarrassed.
• Little White Mouse proves loyal and eager to help, agreeing immediately to learn the technique needed to rescue Yui’s original self.
• Jiraiya remains friendly and helpful, though he keeps his knowledge of the prophecy private.

Significant themes

• Ingenuity under constraint: Yui works around limited chakra, an unusual contract, and her restricted circumstances.
• Trust and cooperation: Yui and Little White Mouse rely on their bond and share the task of rescuing her original self.
• Growth through experimentation: Yui develops new techniques while recognizing how much she still has to learn.

Plot points and events

• Little White Mouse reveals she can use the Summoning Technique, but needs Yui’s chakra and a drop of blood because they share a bloodline contract. Yui hurries home, hoping this will help restore her original body.
• Outside her house, Yui spots Ikuko Hyuga and flees into a nearby alley, fearing she has been discovered. Ikuko follows and uses her Byakugan to find Yui hiding.
• Yui secretly directs Little White Mouse to escape, collect blood from Yui’s original body, and seek help from Yamada Hideko. She then steps out to distract Ikuko.
• During their conversation, Ikuko reveals that she belongs to the Branch Family and has a Caged Bird Seal on only half her forehead. She refuses to explain why it is incomplete.
• When Ikuko indicates that Yui should stop resisting and wait several years, Yui attacks with Wind Release: Gale Palm, aiming to disrupt Ikuko’s chakra. Ikuko counters effortlessly with Eight Trigrams Palm: Rotation and prepares to teach Yui how to use the Byakugan.

Character developments

• Yui is anxious but resourceful: she prioritizes getting Little White Mouse to safety, keeps Ikuko talking to buy time, and attacks decisively when negotiation ends.
• Little White Mouse shows growing independence and loyalty by agreeing to carry out Yui’s urgent plan.
• Ikuko Hyuga shifts from teasing and apparently conversational to openly dominant. Her unusual half-seal hints at a complicated relationship with the Hyuga clan system.

Significant themes

• Fate versus resistance: Yui challenges the Hyuga belief that people must accept their assigned place.
• Loyalty and trust: Yui relies on Little White Mouse and Yamada Hideko as her few trusted allies.
• Power and vulnerability: Yui’s tactical attack is neutralized by Ikuko’s superior skill, underscoring the gap between them and the danger Yui faces.

Character interactions

• Yui and Little White Mouse share a close, trusting bond, with Yui entrusting her with a mission tied to rescuing her original body.
• Yui confronts Ikuko over the idea of fate and questions her apparent acceptance of Hyuga traditions.
• Ikuko treats Yui as a promising but inexperienced ninja, praising her tactics while demonstrating the Byakugan’s defensive power.

Key plot points and events

• Yui’s Shadow Clone fights Ikuko Hyuga. Yui blocks Ikuko’s unfamiliar, self-developed Gentle Fist attack with a last-second Body Flicker.
• Yui repeatedly uses Wind Release: Gale Palm. Ikuko counters with the Hyuga technique Rotation, which not only blocks the attacks but reflects them back at Yui.
• While Yui defends against the reflected strikes, Ikuko exploits the blind spot in Yui’s 359-degree Byakugan field of vision and attacks from behind, sealing Yui’s chakra points with Thirty-Two Palms.
• Before Ikuko can destroy the Shadow Clone, Yui asks her to look after Nai Hyuga. Ikuko accidentally reveals that Nai will not need looking after, then claims Nai is still in the clan teaching Gentle Fist. Her evasive, contradictory answers convince Yui that something has happened to Nai.
• Ikuko strikes Yui, dispelling the clone. She leaves the damaged area, still thinking about the small mouse she encountered in an alley.

Character developments

• Yui shows resourcefulness, using water defenses, repeated attacks, and close observation of Rotation to learn from the fight. Though defeated, her concern for Nai—and her effort to buy time for Little White Mouse to escape—remains her priority.
• Ikuko demonstrates confidence and combat skill, but her irritation and accidental disclosure reveal discomfort around Nai’s situation. She dismisses the matter as fate, while privately remembering the mouse with unexpected fondness.

Significant themes

• Combat as learning: Yui studies Ikuko’s techniques even while losing.
• Blind spots and incomplete knowledge: Yui’s limited Byakugan vision is a literal vulnerability; conflicting accounts about Nai leave her in the dark.
• Protection and fate: Yui tries to protect Nai and Little White Mouse, while Ikuko suggests that Nai’s circumstances cannot be changed.

Character interactions

• Yui and Ikuko’s battle is both a physical contest and a test of experience: Ikuko taunts Yui’s reliance on one technique, then teaches her a harsh lesson about Rotation and the Byakugan’s blind spot.
• Yui’s plea about Nai shifts the exchange from combat to concern. Ikuko’s guarded replies deepen Yui’s suspicion rather than reassure her.

Plot points

• Ikuko Hyuga realizes the “mouse” she previously saw is a Summoning Beast and returns to the alley, but it has already escaped.
• She uses a secret Byakugan ability, Visual Tracking, to follow its tiny footprints. The technique can trace movements for up to a week, but it takes a severe toll on her mental energy.
• Yui receives her Shadow Clone’s memories and learns it was dispelled. Ikuko’s claim that Nai Hyuga is training conflicts with the Hokage’s claim that Nai is on a mission, leaving Yui unsure whom to trust.
• Little White Mouse searches Konoha for Yamada Hideko, the person its master told it to find. Its talking frightens the crowd and causes a commotion.
• Members of the Uchiha-led Military Police arrive to investigate. One officer jumps into the cleared space, accidentally steps on the mouse’s tail, then picks it up to manage the crowd.

Character developments and interactions

• Ikuko Hyuga shows determination and secrecy: despite the physical cost, she uses her unusual tracking Dojutsu to pursue the mouse.
• Yui becomes increasingly suspicious about Nai’s whereabouts and recognizes that thinking alone will not resolve the conflicting accounts.
• Little White Mouse is anxious, vulnerable, and focused on carrying out its master’s instructions. It is upset both by its inability to find Hideko and by the officer dirtying its tail.
• The Military Police officer is frustrated by the crowd but tries to follow procedure rather than punish people for insulting the Uchiha. He ultimately intervenes to prevent the situation from worsening.

Themes

• Secrecy and mistrust: Yui’s uncertainty over whether the Hokage or Ikuko is lying raises doubts about the truth surrounding Nai.
• Power and cost: Ikuko’s powerful tracking ability is useful but drains her heavily, and she keeps it hidden.
• Prejudice and public fear: The crowd’s panic at the talking mouse, along with its hostility toward the Uchiha, highlights suspicion and social tension in Konoha.

Plot and key events

• Konoha Military Police captain Chengdou finds Little White Mouse and suspects it may be a spy’s summoning beast. He is about to examine it with his Sharingan when Ikuko Hyuga arrives.
• The mouse escapes Chengdou but Ikuko catches it with Wind Release. She explains that it belongs to a younger clan member, Yui Hyuga, and Chengdou drops his suspicions.
• Alone with the mouse, Ikuko admits it nearly fooled her and places a Contract Seal on it. She intends to take it somewhere “fun,” but Yui hears the mouse’s mental call for help and uses the Summoning Technique.
• Xiao You breaks Ikuko’s seal with golden chakra and vanishes in a puff of smoke. Ikuko is surprised but accepts the escape.
• Reunited, Yui reassures the mouse, then names it Xiao You. She tells it they are family, not master and servant, and asks it to call her by her name.

Character development and interactions

• Yui responds to Xiao You’s distress and treats it with affection rather than blame. Her insistence on seeing them as family deepens their bond.
• Xiao You remains frightened and mischievous, but its loyalty and attachment to Yui are clear. Its relief at receiving a name turns into a tender moment of trust.
• Ikuko is protective and teasing; she recognizes Xiao You’s tricks but avoids harming it because Yui would be upset.
• Chengdou shifts from suspicion to reassurance once he learns the mouse belongs to a Konoha clan member. His reunion with Ikuko also hints at their shared past as classmates and mission comrades.

Significant themes

• Belonging and family: Naming Xiao You and rejecting a master-servant relationship gives their connection a more personal, equal meaning.
• Loyalty and trust: Xiao You calls for Yui, and Yui immediately answers.
• Appearance versus reality: The seemingly ordinary mouse proves capable of escaping capture and breaking a powerful seal.
• Protection and freedom: Ikuko tries to contain Xiao You, but Yui’s summoning brings it back to safety.

Key plot points

• ANBU reports that Hyuga Feng has secretly collected the Byakugan of deceased Main Family members and discovered a way to combine them to improve their visual power.
• The investigation also finds that Feng has conducted human experiments, bringing orphans from other countries to Konoha over roughly a decade. Hiruzen says the experiments cannot be tolerated and presents Danzo with evidence.
• Hiruzen assigns Root to handle the matter, allowing Danzo the chance to claim the Byakugan, but orders him to avoid harming innocents or provoking the Hyuga elders. He delays action until the Hyuga heir is older and can inherit the Will of Fire.
• Meanwhile, trapped Yui decides to escape by using the Summoning Technique. With Xiao You on her shoulder, she successfully vanishes in a cloud of smoke, leaving the mouse behind.

Character developments and interactions

• Hiruzen balances stopping Feng’s abuses against preserving the Hyuga Clan and keeping Konoha stable. He uses Danzo and Root for the operation but sets strict limits.
• Danzo is fascinated by the Byakugan’s potential and eager to seize it. Although he resents the delay, he accepts it because he expects to benefit.
• Yui shows determination and resourcefulness, choosing a risky, uncertain escape method in hopes of eventually removing her Caged Bird Seal and finding Nai Hyuga.
• Xiao You is confused by Yui’s plan and is left bewildered after she disappears.

Significant themes

• Power and exploitation: The Byakugan’s potential draws Danzo’s interest, while Feng’s experiments cross ethical and political boundaries.
• Political compromise: Hiruzen’s response reflects the tension between justice, clan stability, and Konoha’s interests.
• Escape and uncertainty: Yui acts without knowing where the Summoning Technique will take her, making freedom a dangerous gamble.

Plot points and events

• Yui escapes a disorienting, high-speed passage by diving through one of many glowing rings and emerges high above an unfamiliar forest.
• She uses a wind technique to slow her fall, but loses her shoes and lands barefoot in a vast forest of pale-blue trees. The trees tower hundreds of meters above her, and the ground is a poisonous swamp.
• After her feet sink into the swamp and begin turning black, Yui uses the Byakugan to see her cells deteriorating. She reasons that the blue trees may resist the swamp’s poison, crushes their leaves, and applies them to her feet. The treatment works, and she recovers.
• Yui chooses not to summon Little White Mouse, keeping it safe in Konoha. She continues flying through the seemingly lifeless forest, surviving on food pills.
• Three days later, she spots a rounded mountain range ahead. Though its shape strikes her as odd, she flies toward it, determined to find something beyond the endless forest.

Character development and interactions

• Yui shifts from initial awe and confusion to practical survival: she treats her injuries, observes the environment, and uses her knowledge to find an antidote.
• Her near-fatal mistake in the swamp leaves her more aware that she must investigate before acting. Despite loneliness and frustration, she remains persistent.
• Yui shows concern for Little White Mouse by deciding not to expose it to danger. She is otherwise isolated, with no other beings encountered.

Significant themes

• Survival through observation and adaptability: Yui’s careful use of the Byakugan and reasoning about the trees saves her.
• Isolation and endurance: The empty, seemingly endless landscape tests her physically and emotionally.
• Curiosity amid danger: Even after repeated hardship, Yui presses on toward the mysterious mountains.

Key plot points

• Yui reaches a vast white mountain range and realizes it is Katsuyu, meaning she has arrived at Shikkotsu Forest.
• Katsuyu asks how Yui knows her. Yui claims she read about Katsuyu in an ancient scroll, hiding that she knows of her from another source.
• Yui explains that she entered spatial turbulence after using an uncontracted Summoning Technique. Katsuyu warns that time can pass very differently inside it; some people have been trapped for thousands of years.
• Yui entered in Konoha Year 26, and Katsuyu estimates it is now Year 27. Relieved that only a year has passed, Yui insists she must return to Konoha, thinking of Nai Hyuga and Little White Mouse.
• Katsuyu explains that the corrosive liquid around the forest’s edge is her own spit, intended to keep the toads of Mount Myōboku away. She also reveals that Yui is only the second human to reach Shikkotsu Forest in a thousand years, but becomes angry when Yui asks about the first.
• Katsuyu offers to teach Yui Senjutsu. Yui refuses, prioritizing her return to Konoha and her urgent personal business.

Character developments and interactions

• Yui is startled and uncomfortable around the enormous slug, but stays composed and answers Katsuyu’s questions. Her concern for people back in Konoha outweighs the temptation to gain a powerful new ability.
• Katsuyu is gentle and curious, scolds Yui for her reckless technique without hostility, and admires her resolve. She is also eager to recruit Yui after the toads have boasted about training a Sage Mode user.
• Their conversation shifts from cautious introductions to mutual disclosure, then to tension when Katsuyu’s offer conflicts with Yui’s urgent plans. Katsuyu is not ready to abandon the idea of training her.

Significant themes

• Urgency versus opportunity: Yui chooses her responsibilities and relationships over an exceptional chance to learn Senjutsu.
• The dangers of recklessness: Spatial travel can have unpredictable consequences, especially for time.
• Rivalry and pride: Katsuyu’s reluctance to discuss the other human—and her frustration with the toads’ bragging—suggests a competitive history between the summons.

Plot points and events

• Yui agrees to learn senjutsu from Katsuyu after she finds her missing friend in Konoha.
• Katsuyu proposes a summoning contract and explains that Yui can have contracts with multiple summoning beasts.
• Yui reveals that the Hyūga Branch Family imprisoned her, leaving her stranded by spatial turbulence. Katsuyu condemns the clan’s treatment of its Branch Family.
• Katsuyu cannot send Yui back immediately: her Konoha clone must first be summoned so she can use reverse summoning. Yui accepts that she may have to wait.
• Katsuyu heals Yui’s injuries and carries her deeper into the region. Yui is amazed by its vast lake, mountains, and enormous trees.
• Katsuyu leaves Yui in the landscape, saying her true main body—five times larger than the mountain-sized form Yui saw—will come to meet her.

Character development

• Yui remains determined to find her missing friend, even though she is eager to learn a power beyond chakra. She accepts the delay and begins to trust Katsuyu.
• Katsuyu is welcoming, compassionate, and unusually talkative. She shows concern for Yui’s welfare and anger at the Hyūga clan’s abuses.

Significant themes

• Loyalty and responsibility: Yui puts finding her friend before pursuing senjutsu.
• Abuse and injustice: Yui’s account of her imprisonment underscores the Hyūga Branch Family’s oppression.
• Patience and dependence: Yui must rely on Katsuyu’s summoning network and wait to return home.
• Wonder and scale: The extraordinary landscape and Katsuyu’s immense size emphasize the strange, expansive world Yui has entered.

Character interactions

• Yui and Katsuyu negotiate Yui’s training and return, building trust through honest conversation.
• Katsuyu comforts and heals Yui, while Yui responds with gratitude and curiosity.
• Katsuyu’s gentle manner and use of “Lady Yui” contrast with Yui’s surprise at how conversational she is.

• Key events: While waiting for Katsuyu to arrive, Yui summons Xiao You, whom she accidentally left behind in Konoha for a year after being caught in a spacetime rift. Xiao You is upset about being lonely in the sealing chamber, but Yui explains what happened and apologizes. Katsuyu then appears in the form of an elegant woman rather than the enormous slug Yui expected, explaining that she uses the Transformation Technique. She unrolls her summoning scroll and invites Yui to sign a contract. Xiao You also sees Katsuyu briefly reveal her true slug-like form. The scroll bears the names of past summoners, including Tsunade and Hashirama Senju; Katsuyu says the others have died and suggests Yui get to know Tsunade.
• Character developments: Yui shows concern for Xiao You and takes responsibility for leaving her behind. Xiao You’s loneliness and hurt give way to relief once she understands the circumstances. Yui is surprised to learn that Katsuyu can use ninjutsu and that the “Slug Sage” is a summoning creature. Katsuyu comes across as dignified but playful, and indifferent to formal titles.
• Character interactions: Yui and Xiao You reunite warmly, with Yui comforting and explaining herself to the mouse. Xiao You and Katsuyu quickly establish a friendly rapport, despite Xiao You’s startled reaction to Katsuyu’s real form. Katsuyu welcomes Xiao You as a companion and invites Yui to sign the summoning contract. Their conversation also reveals that Yui and Tsunade are already classmates.
• Themes: The chapter emphasizes friendship, loyalty, and repairing bonds after an unintended separation. It also explores surprises beneath appearances—Katsuyu’s humanlike disguise and Xiao You’s unusual nature—and introduces the legacy connecting Yui to earlier summoners.

Key plot points and events

• Yui signs the Slug Summoning Contract by writing her name in blood after Katsuyu confirms that is all the ritual requires.
• While waiting, Yui considers removing her Caged Bird Seal. Katsuyu warns that the process may be impossible or dangerous, and suggests first learning Shikkotsu Forest senjutsu, which could remove the seal safely.
• Katsuyu explains that learning senjutsu could take years. Though Shikkotsu Forest’s method is gentler and avoids assimilation, Yui decides the delay is too long and plans to attempt her own method after preparing tools.
• In Konoha, Hyuga Feng’s transplanted Byakugan finish integrating after a year. When he activates them, his chakra rapidly floods toward his eyes, but he ignores the danger to test his new abilities.
• Feng detects a concealed ninja in his laboratory—someone able to evade the Hyuga’s usual penetrating vision—and begins gathering chakra to attack. The intruder prepares a response, while Sano watches in confusion.

Character developments and interactions

• Yui remains determined and practical, weighing the risk of losing her Byakugan against the lengthy alternative of senjutsu training. She accepts Katsuyu’s help for the eventual procedure.
• Katsuyu shows perceptiveness and concern, recognizing that Yui’s plan is risky and offering a safer option and personal assistance.
• Hyuga Feng is exhilarated by his newly integrated Byakugan and eager to explore its enhanced powers, but his confidence leads him to disregard a potentially serious chakra abnormality.
• Sano is excited by the successful integration, notices Feng’s chakra behaving strangely, and then observes what may be a new Byakugan-related technique.
• The hidden ninja is alarmed at being discovered and resolves to conceal their identity, even if escape is impossible.

Significant themes

• Risk versus patience: Yui chooses a dangerous, immediate strategy over years of safer training.
• Power and its costs: Feng gains heightened perception, but the power drains and redirects his chakra in a troubling way.
• Trust and cooperation: Yui accepts Katsuyu’s offer of support, while Feng’s dismissal of Sano’s warning isolates him as he experiments.
• Secrets and surveillance: Yui’s concealed seal and the infiltrator’s hidden presence underscore how much remains unseen or concealed.

Key plot points and events

• Hyuga Feng confronts a black-clad intruder in the Laboratory, using a powerful, chakra-draining “Byakugan Beam.” The intruder evades it while preparing a jutsu, then lets the beam strike him after warning that Kumogakure will not forgive the Hyuga Clan.
• Feng collapses from exhaustion, and Sano helps restore his chakra. Feng orders an investigation, while Ikuko arrives, accepts responsibility for the breach, and is sent to find out how the intruder entered.
• Feng discovers the intruder’s clothing can block Byakugan perception and withstand the beam. The man’s forehead protector and traces of Lightning Release suggest a Kumogakure connection, but Feng cautions that his identity is not yet certain.
• In Shikkotsu Forest, Yui asks Katsuyu to help remove her Caged Bird Seal by placing herself in suspended animation. Katsuyu initially refuses, then reluctantly agrees to help for only fifteen seconds.
• Katsuyu examines Yui’s eyes and finds the seal intertwined with her brain and optic nerves. She says the chance of saving Yui’s eyes is low; Yui reacts with relief that survival is possible and remains determined to proceed.

Character developments and interactions

• Hyuga Feng shows formidable power but is weakened by its cost. He shifts quickly from combat to investigating the threat and remains cautious about identifying the intruder.
• Sano is shaken by the infiltration and blames himself, but supports Feng by transferring chakra and examining the corpse.
• Ikuko accepts blame for the security failure and obeys Feng’s order to investigate.
• Yui proves willing to risk blindness—or worse—to remove the seal, trusting her chakra perception and Hyuga abilities even if she loses her sight.
• Katsuyu moves from alarm and refusal to reluctant cooperation. Though exasperated, her concern for Yui as her partner keeps her from leaving.

Significant themes

• Risk and resolve: Yui accepts severe danger for the chance to escape the Caged Bird Seal.
• Trust and care: Katsuyu’s reluctant help reveals affection beneath her frustration.
• Security and uncertainty: The Laboratory breach exposes a serious vulnerability, while the intruder’s true identity and purpose remain unresolved.
• Power and cost: Feng’s devastating technique drains him, underscoring the physical price of great strength.

Key plot points and events

• Yui needs to enter a deathlike state so Katsuyu can remove her Cursed Seal. Since Yui has no suitable drug with her, she uses Lightning Release chakra against her temple to suppress her brain activity.
• Katsuyu tests her Acid Mist Healing on Yui’s hand. Though painful, the Senjutsu technique’s cellular stimulation can revive Yui if needed. Katsuyu prepares to monitor her and sets a fifteen-second limit before waking her.
• Yui’s Lightning Release fades and her arm goes limp. Katsuyu senses Yui’s brain activity cease, and even their Summoning Contract connection disappears. Outside, Xiao You notices it can no longer sense Yui but stays out of the room, respecting the procedure.
• In the Land of Grass, Jiraiya reports spotting six rogue ninja and wants to attack immediately. Orochimaru doubts the intelligence, since the rogues were said to have scattered only six hours earlier. Tsunade prevents an argument from derailing the mission by proposing that both men send summoning beasts to verify the camp.
• The trio’s S-rank mission is especially important because completing it will help them qualify for promotion to jonin; each has already completed an A-rank mission alone.

Character developments and interactions

• Yui shows determination and accepts severe pain rather than risk failing the procedure.
• Katsuyu is cautious and protective, carefully testing her revival method and setting a strict limit on how long Yui can remain unconscious.
• Xiao You is alarmed by Yui’s disappearance from its senses but chooses not to interfere.
• Jiraiya is confident in his reconnaissance and eager to prove his new power, but reacts defensively when challenged.
• Orochimaru is skeptical and willing to withdraw rather than accept Jiraiya’s assumptions; he ultimately cooperates with Tsunade’s plan.
• Tsunade acts as mediator, redirecting the dispute toward verification. Jiraiya accepts her compromise, recognizing the need for teamwork.

Significant themes

• Trust and caution: Yui depends on Katsuyu to revive her, while the mission team weighs Jiraiya’s observations against the risks of acting on uncertain intelligence.
• Pain and resolve: Yui endures a dangerous, agonizing method to pursue her goal.
• Teamwork and responsibility: Tsunade’s practical compromise helps the squad prioritize its shared mission and advancement over personal conflict.