Sen

Biodata

Feature	Detail
Name	Uchiha Sen 2 58
Age	6 (debut) 2, 9 14, 11 84, 13 101 150, 14 174
Affiliation	Konoha 76 133, Uchiha Clan 7 76 116 133, Kirigakure (reformer and allied power) 139 162 163
Rank	Chunin (at age 9) 14 47, Jonin 76, Security Force Captain 97 116, Police Force Captain 116
Kekkei Genkai	Three Tomoe Sharingan 58, Mangekyo Sharingan 101 125 136, Uzumaki Physique 2 14 58 75 101, Wood Release 101, Lava Release 89 90, Shikotsumyaku 146 150
Kekkei Tōta	Dust Release 101 150
Chakra Natures	Fire 2 14 84, Wind 14 84, Lightning 14, Water 29 36, Earth 19 29
Known Abilities	Three Basic Jutsu 2 14, Shadow Clone Jutsu 14, Fire Release: Great Fireball Jutsu 14, Fire Release: Phoenix Sage Fire Technique 14, Fire Release: Great Fire Annihilation 14, Lightning Release: Lightning Clone Jutsu 14, Lightning Release: Lightning Ball 14, Wind Release: Great Breakthrough Technique 14, Skillful Hand Shuriken Jutsu 14, Uchiha Style Swordsmanship 14, Hatake Clan Sword Style 58, Sunagakure Toxin Mastery 58, Basic Puppet Technique 58 60, Hiding in Mist Technique 60, Earth Release: Clone 60, Water Release: Water Dragon Bullet Technique 36, Flying Thunder God Technique 150 179, Chidori and Raikiri 156, Lightning Release Armor 184, Susanoo 125, Tsukuyomi 125, Space Compression 125, Dust Release: Boundary Severance Technique 149
Relationships	Mikoto (love interest) 72 105, Kushina (childhood friend/love interest) 7 107 163, Hikari (clan member/ally) 99 101 105 116 133, Yumeno (enemy/love interest) 60 62 136 137, Mei Terumi (Kirigakure ally and political partner) 139 162
Notable Feats	Single-handedly destroyed six enemy strongholds 78, defeated six Chunin 72, killed an elite squad led by a Jonin 66, broke a siege by Iwagakure Jonin 84, killed Uchiha Sōgaku 105, killed Danzō and over twenty Root Jonin 125, killed the Third Mizukage Yū's monstrous form 149, purged Kirigakure's resisting forces 156 157, surpassed A in speed and suppressed the Eight-Tails 180, defeated the Third Raikage and conquered Kumogakure 192 194
Personality	Cruel disposition 136, calculating 97 125, strategic 60 66 97 105, fearless 137, arrogant 72 137, charismatic 99 116, caring (towards those important to him) 72 133, womanizer 136
Goal	Unify the Ninja World and end its wars 58 133 194, annihilate or subdue opposing countries 136, surpass the First Hokage 133

Physical Description

Sen is described as having a cold and handsome face 1. He is noted to be a "snot-nosed kid in his teens" by a guard 97. At one point, he is described as being a full twenty centimeters shorter than Hatake Sakumo 53. Mei Terumi finds him "damn handsome" 140.

• Age: 6 years old 2, 9 years old 14, 11 years old 58 84, 13 years old 101 150, and 14 years old 174.
• Hair: Blond (when disguised as Shimura Saburo) 47.
• Eyes: Possesses the Sharingan, which initially manifests as two small tomoe rotating within his pitch-black pupils 7. He later develops the Three Tomoe Sharingan 29 58 and awakens the Mangekyo Sharingan 89 101 136. His eyes can also be crimson 94.
• Physique: Described as having "strong arms" 1. He has an "Uzumaki Physique" 2 7 14 58 75 101, which grants him increased Chakra capacity, strong vitality, and the ability to rapidly repair non-fatal wounds 14. Wood Release further allows him to safely inherit Shikotsumyaku 146. His physique stat has been noted at 6 (age 6) 2, 203 (age 9) 14, 287 (age 11) 58, 592 (age 13) 101, and 832 (age 13) 150.
• Kekkei Genkai: Sharingan 7 14, Three Tomoe Sharingan 58, Mangekyo Sharingan 101, Uzumaki Physique 2 7 14 58 75 101, Wood Release 101 140, Lava Release 89 90, Shikotsumyaku 146 150, and Dust Release (Kekkei Tōta) 101 150.

Background

Uchiha Sen, a ninja from the Uchiha clan, began his journey at the age of six, possessing a system that allowed him to enhance his abilities 2. He quickly awakened his Sharingan, a Kekkei Genkai of the Uchiha clan, by age six, and by age nine, he had also acquired the Uzumaki Physique, which increased his Chakra capacity and vitality 7 14. Sen's parents died in an "accidental mission," a detail that Uchiha Setsuna, a legendary Uchiha figure, later revealed might have involved the Senju clan 5.

Early in his career, Sen trained rigorously, sparring daily with Kushina and occasionally with Minato to copy their Ninjutsu 14. He also gained mental power from Uchiha Hikaru, one of Uchiha Setsuna's guards 14. Sen quickly demonstrated exceptional learning abilities, mastering the Hatake clan's swordsmanship 53 58. His early missions included infiltrating the Land of Wind, where he showed leadership and strategic thinking 48. By age ten, he was leading Uchiha clansmen on missions, earning their respect through his strategic thinking and concern for their safety, despite their initial doubts due to his youth 33. Sen was promoted to Jonin due to his battlefield contributions and was appointed as the overall commander for a mission in the Land of Earth 76. He later awakened the Mangekyo Sharingan, an advanced form of the Sharingan, which granted him powerful abilities like the High-Level Layered Realm 89 100. Sen eventually became the Uchiha clan's dominant leader, arranged for the Third Elder to become formal clan head, and assumed command of the Police Force 116.

After publicly exposing the crimes of Root and challenging Hiruzen's authority, Sen's conflict with Konoha's leadership escalated beyond internal Uchiha politics 125. He subsequently defeated the reanimated Senju Tobirama through superior speed, space-time ninjutsu, and sealing techniques, enabling the Uchiha clan to begin governing itself with greater autonomy 132.

Sen then entered Kirigakure alongside Mei Terumi. He persuaded Jūzō Biwa to abandon the village, subdued the Kaguya clan, killed the monstrous entity controlling the Third Mizukage Yū, and violently eliminated the forces that continued to resist his rule 139 146 149 156. Following the purge, he and Mei reorganized Kirigakure's institutions, rebuilt infrastructure with Wood Release and Shadow Clones, and won increasing support from its ninja and civilians 159 162. Although he returned to Konoha afterward, he continued to regard Kirigakure as a power aligned with his larger ambitions 163.

During the Third Shinobi World War, Sen fought Kumogakure's leadership directly. He exceeded A's speed through his Mangekyo Sharingan's time-acceleration ability, suppressed the Eight-Tails with Wood Release, acquired Lightning Release Armor while battling the Third Raikage, and ultimately defeated Kumogakure's Raikage forces 180 184 192 194.

Personality

Sen's personality is characterized by a blend of intelligence, strategic thinking, and a ruthless pragmatism that often surprises those around him 4 58. He is described as calculated and not afraid to use force when necessary, particularly in pursuit of justice 97. Despite his young age, he exhibits a maturity beyond his years 74.

He demonstrates immense courage and determination, even when confronting powerful figures like Danzō 97. Sen is highly adaptable and a quick learner, mastering new skills with exceptional speed, such as Hatake's swordsmanship 53. He is also politically astute, capable of challenging established views and declining offers that do not align with his principles 4.

While initially appearing pacifist, Sen's experiences in war lead him to a more ruthless and strategic mindset, as seen when he proposes poisoning rivers to end a conflict, shocking even seasoned ninja like Hatake Sakumo and Minato 58. This shift leads to a perception of him as having a "world-dominating aura" and a "cruel disposition" by some 94 136. He shows no mercy or hesitation in eliminating enemies, often with overwhelming force 108. His conduct during the Kirigakure purge demonstrates that he is willing to massacre entrenched opponents when he believes doing so will make later rule safer and more stable 156 157.

Despite his formidable abilities and ruthlessness in combat, Sen can be caring and protective of those important to him, such as Kushina and Mikoto 2 72. He inspires loyalty and respect from his colleagues and villagers, often gaining their admiration through his actions and generosity 97 99. He is also capable of empathy, understanding the loneliness of others like Jūzō Biwa 139. He extends this protective instinct to ordinary civilians, promising the people of conquered Kumogakure that their lives will not be arbitrarily worsened under his rule 194.

Sen's interactions often reveal his confidence and sometimes a casual, even teasing, demeanor, especially with Minato 108. He can be dismissive of threats he perceives as beneath him 108. He holds strong ideals, particularly the desire to unify the ninja world to end wars, a goal he believes justifies his often extreme methods 58 100. He is also noted for his "womanizer" tendencies, though he lacks romantic interest in some who admire him 136 139.

Abilities

Uzumaki Physique

Sen possesses the Uzumaki Physique, a top-tier life force talent that significantly enhances his physical capabilities and recovery 2.

• Applications:
  • Increases Chakra capacity by 100% at the beginner level and 300% at the intermediate level 2 75.
  • Provides powerful vitality, allowing minor wounds to heal quickly 2.
  • Doubles the recovery effect for non-fatal or minor wounds at the intermediate level 75.
  • Increases lifespan by 20% at the intermediate level 75.
  • Gives a higher starting point for awakening the Sharingan 7.
  • Combined with his Wood Release physique, permits him to inherit Shikotsumyaku without suffering its usual side effects 146.
• Limitations:
  • The full extent of its benefits is limited by physical age and body limitations, especially during childhood 14.

Sharingan

Sen awakened a two-tomoe Sharingan after gaining sufficient mental strength, later advancing it to the Three Tomoe Sharingan 7 29 58.

• Applications:
  • Allows observation and planning in battle 60.
  • Can be used to interrogate captured enemies 49.
  • Enables the user to see through illusions 43.
  • Capable of controlling Tailed Beasts, as demonstrated when Sen controlled a part of the Nine-Tails' Chakra 75.
  • Can be used to cast powerful genjutsu 75.
  • Allows for the detection of puppeteers controlling puppets 49.
• Limitations:
  • Requires sufficient mental strength to activate and advance 6 77.
  • A six-year-old possessing the Sharingan would attract unwanted attention 7.

Mangekyo Sharingan

Sen possesses the Mangekyo Sharingan, which grants him unique and powerful abilities 89. He does not go blind from using it 131.

• High-Level Layered Realm: This ability allows Sen to infinitely overlap and compress space, crushing anything within his field of vision into a single point 89. It can forcibly compress and fold objects, turning them into an unseen singularity 114.
• Kuzugami no Shigan: Sen's right eye compresses space, while his left eye compresses time. By accelerating time, he can dramatically hasten processes such as Wood Release growth and make opposing movements appear slow 103 131 180.
• Susanoo: Sen can manifest Susanoo, a giant, humanoid avatar made of his chakra, for defense and offense 110. He can use Yasakani no Magatama through his Susanoo 110.
• Amaterasu: Sen can use Amaterasu, black flames that can burn anything 110 114.
• Tsukuyomi: Sen is capable of using Tsukuyomi, a powerful Mangekyo Sharingan genjutsu 125.

Space-Time Ninjutsu

Sen has a deep understanding of Space-Time Ninjutsu and can utilize it effectively 108 110.

• Applications:
  • Can use Yasakani no Magatama to teleport and instantly kill enemies 110.
  • Can counter and dodge other Space-Time Ninjutsu users like Tobirama Senju 131.
  • Has insights into the Flying Thunder God Technique 108.
  • Can use the Flying Thunder God Technique itself, allowing rapid movement to marked locations 150 179.
  • Uses sealing techniques effectively against the Impure World Reincarnation, including sealing Tobirama's severed limb to prevent it from regenerating 132.

Elemental Natures and Ninjutsu

Sen has demonstrated proficiency in multiple elemental natures and various ninjutsu 62 79.

• Fire Release: Sen can use Fire Release techniques such as Great Fireball Technique and Phoenix Sage Fire Technique 14 49 62.
• Water Release: Sen can use Water Release techniques, including Water Demonsquito, Water Prison Wall, and Water Dragon Bullet Technique 36 43 74.
• Lightning Release: Sen can infuse his short sword with lightning to enhance his attacks and pierce through opponents' weapons 53 62. He can also use Lightning Clone Jutsu and Lightning Ball 14, as well as Chidori, Raikiri, Chidori Flow, and Chidori Sharp Spear 156 157.
• Lightning Release Armor: Sen absorbed Lightning Release Armor during his battle with the Third Raikage. Its use alongside the Eight Inner Gates places a severe burden on even his unusually resilient body 184.
• Wind Release: Sen can use Wind Release: Great Breakthrough Technique and Wind Release: Vacuum Sphere 14 79.
• Earth Release: Sen can use Earth Release: Earth-Style Wall and Earth Release: Clone 60 74.
• Wood Release: Sen can use Wood Release, which he used to protect himself from Amaterasu 101 102. He can create structures and vessels, suppress Tailed Beast Chakra, and absorb large-scale enemy ninjutsu 140 153 180.
• Lava Release: Sen absorbed Roshi's Lava Release Kekkei Genkai and subsequently used it while disguised as Roshi to devastate Iwagakure's forces 89 90.
• Dust Release: Sen obtained the memory of Dust Release usage, a Kekkei Tōta that surpasses Kekkei Genkai and can decompose all things 85 102. He later used Dust Release: Boundary Severance Technique to completely erase Yū's monstrous form 149.
• Other Ninjutsu: Sen is proficient in the Three Basic Jutsu, Shadow Clone Jutsu, Multiple Shadow Clone Jutsu, Shuriken Shadow Clone Jutsu, and Advanced Medical Ninjutsu 14 79. He also knows Secret Technique: Expansion Jutsu, Secret Technique: Mind Body Switch Technique, and Secret Technique: Body Transfer Technique 79.

Taijutsu and Kenjutsu

Sen is highly skilled in close-quarters combat and swordsmanship.

• Eight Inner Gates: Sen can open the Eight Inner Gates to significantly boost his power and speed, though prolonged use can be taxing 61 62 89. He later opens the Seventh Gate, the Gate of Wonder, in battle against the Third Raikage 184.
• Swordsmanship: Sen quickly learns and adapts to different swordsmanship styles, including the Hatake clan's swordsmanship 53 58. He uses a short sword in combat 66 130.
• Stealth Attacks: Sen is specialized in stealth attacks and can silently dispatch enemies 66 79.

Other Acquired Abilities

Sen has the ability to absorb traits from defeated or engaged enemies, including Kekkei Genkai, ninjutsu, and physical attributes 1.

• System: Following a sufficiently successful battle, Sen may copy up to three traits from an opponent and select one to absorb once per day. Killing an enemy similarly permits him to select one of up to three available traits 1.
• Crow Summoning Technique: Sen knows the Crow Summoning Technique 53.
• Sunagakure Toxin Mastery: Sen has knowledge of Sunagakure's poison techniques 58.
• Basic Puppet Technique: Sen can control puppets using chakra threads 58 60.
• Shikotsumyaku: Sen inherited the Kaguya clan's bone-manipulation Kekkei Genkai after killing a Kaguya ninja, with his Wood Release physique negating its hereditary drawbacks 146.
• Samehada: Sen wields Samehada, using the sentient blade to drain Chakra from opponents and replenish himself or his allies 29 33 149.

Power Progression

Chapter	Event	New Ability/Power	Description
2	Chooses Uzumaki Physique as a reward	Uzumaki Physique (Beginner Physique)	Increases Chakra capacity by 100%, provides powerful vitality, and allows minor wounds to heal quickly 2.
6	Spars with Uchiha Hikaru	Mental Strength +2	Increases mental strength 6.
14	Copies abilities from Kushina and Minato, and Uchiha guards	Uzumaki Physique, Sharingan, Fire Release: Great Fireball Jutsu, Fire Release: Phoenix Sage Fire Technique, Fire Release: Great Fire Annihilation, Lightning Release: Lightning Clone Jutsu, Lightning Release: Lightning Ball, Wind Release: Great Breakthrough Technique, Skillful Hand Shuriken Jutsu, Uchiha Style Swordsmanship, Chakra Nature: Fire, Wind, Lightning	Sen's physical age and body limitations are noted to restrict his performance, but his strength is that of a Chunin 14.
25	Defeats Orochimaru in battle	Basic Medical Ninjutsu	Medical ninjutsu is absorbed after defeating Orochimaru 25.
31	Defeats Might Duy	Eight Inner Gates	Absorbed after defeating Might Duy, who used the technique 31.
45	Claims Chakra +2	Chakra Nature: Water, Earth	Sen's attributes are nearing the 300 mark, and he gains Water and Earth Chakra Natures 45.
53	Learns Hatake clan swordsmanship	Hatake clan swordsmanship	Sen rapidly learns the Hatake clan's swordsmanship after observing Sakumo 53.
58	Defeats Sand Ninja	Basic Puppet Technique	Sen chooses Basic Puppet Technique as a reward after annihilating a reconnaissance squad 58.
61	Opens the Eight Inner Gates	Eight Inner Gates (activated)	Sen opens the Eight Inner Gates to fight a Sand Ninja squad 61.
62	Battles Dokuga and Yumeno	Multiple Chakra Natures and Techniques	Sen uses multiple Chakra natures and techniques during his battle 62.
66	Takes a Soldier Pill	Soldier Pill	Sen takes a Soldier Pill before attacking an elite Sunagakure squad 66.
72	Teaches teammates Taijutsu and Ninjutsu	Medical Ninjutsu	Sen plans to submit a medical ninjutsu technique to the village 72.
74	Checks status panel	Earth Release: Earth-Style Wall, Water Release: Water Prison Wall, Medical Water Release: Water Demonsquito	Sen's strength surpasses that of a typical Jonin, and his mental strength and Illusion Techniques have improved 74.
75	Defeats Nine-Tails (Kurama) and claims reward	Uzumaki Physique (Intermediate Physique)	Chakra capacity increases by 300%, recovery effect for non-fatal or minor wounds doubles, and lifespan increases by 20% 75.
77	Absorbs abilities from Iwagakure ninjas	Stealth, strength, determination	Sen demonstrates stealth, strength, and determination to improve by absorbing enemy abilities 77.
79	Spars with a sensory-type Jonin	Secret Technique: Expansion Jutsu, Secret Technique: Mind Body Switch Technique, Secret Technique: Body Transfer Technique, Ninjutsu: Multiple Shadow Clone Jutsu, Advanced Medical Ninjutsu, Ninjutsu: Shuriken Shadow Clone Jutsu, Wind Release: Vacuum Sphere	Sen absorbs ninjutsu from the stronghold's ninjas 79.
80	Obtains Wood Release from Kazemari Getsuga	Kekkei Genkai · Wood Release (Weak)	A weakened version of the bloodline inherited from Hashirama Senju 80.
84	Activates Eight Inner Gates to their limit	Eight Inner Gates (activated to limit)	Sen activates the Eight Inner Gates to their limit to fight Kitsuchi, boosting his speed and allowing him to use Fire Release: Great Fire Annihilation and Water Release: Water Dragon Bullet Technique 84.
85	Critically injures Kitsuchi	Wood Release	Sen's mental strength is close to 500, and he feels his pupil power has reached the limit of Three Tomoe, nearing Mangekyo awakening 85.
89	Activates Mangekyo Sharingan	Mangekyo Sharingan, High-Level Layered Realm, High-Level God · Three Thousand Worlds All Beings Return to One Eternal Replication Technique, Lava Release Kekkei Genkai	Sen activates his Mangekyo Sharingan, uses High-Level Layered Realm to compress Roshi's arm, and absorbs Roshi's Lava Release Kekkei Genkai 89.
101	Hunts Gato and spars with Hikari	Mangekyo Sharingan, Uzumaki Physique, Wood Release, Dust Release	Sen's strength panel reaches high levels, with his Mangekyo Sharingan and Dust Release listed as Kekkei Tōta 101.
108	Eliminates 327 bandits and rogue ninja	Overwhelming strength and ruthlessness	Sen swiftly and brutally eliminates all enemies, demonstrating his increased power and nonchalance 108.
140	Uses Wood Release to create a boat	Wood Release (mastered)	Sen skillfully uses Wood Release, indicating mastery of Water and Earth affinities 140.
146	Kills a Kaguya clan ninja	Kekkei Genkai: Shikotsumyaku	Sen inherits Shikotsumyaku without its normal side effects because of his Wood Release physique 146.
149	Defeats Yū's monstrous form	Dust Release: Boundary Severance Technique	Sen combines High-Level Layered Realm with Dust Release: Boundary Severance Technique to completely eliminate the entity 149.
150	Checks status panel after defeating Yū	Shikotsumyaku, Flying Thunder God Technique	Sen's status panel confirms Shikotsumyaku and the Flying Thunder God Technique among his extensive arsenal 150.
180	Battles A and Blue B	Kuzugami no Shigan time acceleration	Sen reveals that his Mangekyo Sharingan can accelerate time, allowing his speed to surpass A's, and uses Wood Release to suppress the Eight-Tails 180.
184	Battles the Third Raikage	Seventh Gate: Gate of Wonder, Lightning Release Armor	Sen opens the Seventh Gate and absorbs Lightning Release Armor during the decisive confrontation 184.

Significant Relationships

• Uchiha Mikoto: Mikoto's feelings for Sen deepen, and their relationship progresses 105. She is proud of Sen's strength and believes he trains to protect those important to him 72. She excitedly links arms with Sen and is happy when he says he wants to spend more time with her 72. They have a close relationship, shown through comfortable interaction and shared meals 4. Mikoto accepts the possibility of sharing Sen's affections with Kushina, invoking the Uchiha clan's former polygamous customs 107.
• Namikaze Minato: Sen and Minato work together on missions, with Minato initially suggesting stealthy approaches, but Sen's power often makes it unnecessary 108. Sen gives Minato a scroll containing the Shadow Clone Jutsu, expressing friendship and confidence in Minato's future 9. Minato feels a growing sense of powerlessness compared to Sen's abilities 108. They work well together, with Minato supporting Sen's ideas and trusting his abilities 53. Sen later gives Minato material concerning the Flying Thunder God Technique, continuing to support his friend's development 175.
• Uzumaki Kushina: Kushina displays jealousy and possessiveness over Sen, hinting at growing feelings for him 9. She interrupts Sen and Minato's moment, jealous of their closeness, and later kisses Sen on the training grounds 9. Sen accepts her behavior 9. She gives Sen a big hug upon their reunion, though Sen notes her fatigue 74. They plan to see cherry blossoms together 4. By the time of Sen's rise, Kushina and Mikoto reach an understanding regarding their shared affection for him 107. Sen later seeks to bring Kushina into the Uchiha clan to protect her from Konoha's leadership 163.
• Hatake Sakumo: Their initial interaction is adversarial, with Sakumo testing Sen's skills, but he comes to respect and trust Sen, leading to a mentor-like relationship 53. Sakumo is impressed by Sen's learning ability, as Sen quickly masters Hatake's swordsmanship 53. Sakumo acknowledges Sen's strategic thinking and persuasive skills 53. He is exasperated but welcoming when Sen visits him 134.
• Uchiha Setsuna: Their relationship is one of mutual respect and affection; Setsuna sees Sen as the clan's future, and Sen values Setsuna's wisdom and support 73. Setsuna asks Sen if he is determined to compete for the clan head position, and Sen affirms his resolve 73. Setsuna warns Sen about the political implications and dangers of learning the crow summoning technique 43. Setsuna sees potential in Sen and is impressed by his agility, adaptability, and strategic thinking 6.
• Uchiha Hikaru: Sen challenges Hikaru to a sparring match to prove his ability to protect himself 43. Hikaru initially underestimates Sen's abilities but engages in a fierce battle 43. Hikaru uses his experience to guide Sen during spars, but Sen's quick thinking surprises him 6. Hikaru pledges allegiance to Sen after Setsuna's passing 73. He later assists Sen with Uchiha autonomy, Kirigakure-related affairs, and research into Kaguya clan blood 133 163.
• Orochimaru: They maintain a respectful and understanding relationship, with Orochimaru supporting Sen's decisions 32. Orochimaru shows disappointment in the internal strife within the village and knows Sen's character well, not believing he would be a madman 125. Their relationship later becomes more fraught, as Sen considers Orochimaru an unstable but useful subordinate whose abilities must be kept under control 163 176.
• Uchiha Sibo: Initially hesitant and fearful, Sibo is swayed by Sen's words about protecting family and decides to support Sen 97. Sibo is shocked and confused by Sen's revelations about Konoha's true intentions and Sen's actions but eventually understands his perspective 105.
• Uchiha Chizuru: Chizuru, a captain, initially expresses doubt about Sen but later decides to follow him if Sen truly cares for the clansmen 33. He apologizes to Sen for his clansmen's disrespect and seeks Sen's guidance 32.
• Sarutobi Hiruzen: Hiruzen tries to mediate during Sen's confrontation with Kirigakure envoys but secretly hopes for a conflict to eliminate Sen 137. He reveals his hidden ambition to use Sen as a pawn against the Uchiha Clan 137. Hiruzen is shocked by Sen's actions and the extent of his power, which has surpassed the Kage level 125.
• Uchiha Sōgaku: Sōgaku, the current clan head, offers Sen a deal to hand over Setsuna's personnel in exchange for an exemption from battle, revealing his ambition and willingness to manipulate 73. Sōgaku activates his Mangekyo Sharingan and attacks Sen, wanting to kill him 101. Sen is suspected of killing Sōgaku 125.
• Uchiha Fugaku: Tension grows between Sen and Fugaku as Fugaku becomes increasingly jealous of Sen's influence 99. Fugaku criticizes Sen in front of the team due to jealousy 99. Sen declines Fugaku's offer to join his personal squad, criticizing his views on the clan's future 4. Sen mentally devastates Fugaku 125.
• Mei Terumi: Mei Terumi shows a hint of attraction towards Sen, despite their opposing loyalties 137. Sen spares her during a tense standoff 137. After Sen shows her Kirigakure's grim future, she joins him in seeking to reform the village and becomes his primary partner in its reconstruction 139 162.
• Yumeno: Yumeno, a female Medical Ninja from Kirigakure, is the only female enemy Sen has faced who survived and developed favorable feelings towards him 136. Sen plans to go to Sunagakure to rescue her 137.
• Jūzō Biwa: Sen recognizes Jūzō's loneliness and persuades him to leave Kirigakure by showing him a possible future 139.
• Jiraiya: Jiraiya shows pride in Sen's character, solidifying their mentor-mentee bond 32. Sen casually replies to Jiraiya's self-praise, focusing on the battlefield 33.
• Uchiha Hikari: Hikari secretly distributes money to struggling clan members, winning them over 99. Hikari supports Sen's actions, demonstrating loyalty and discretion 99. Hikari shows concern for Sen's safety and retreats when told to 101.
• Kaguya Yakotsu and the Kaguya Clan: Sen subdues the Kaguya clan rather than exterminating it after Yakotsu acknowledges that the clan needs a strong leader to survive 146.
• A and the Third Raikage: Sen's conflict with Kumogakure brings him into direct confrontation with both Raikage. He surpasses A's speed and ultimately faces the Third Raikage in a battle that determines Kumogakure's defeat 180 184 192 194.

Major Events

• Acquires Basic Puppet Technique Sen acquires the Basic Puppet Technique after annihilating a Sand Ninja reconnaissance squad 58.
• Proposes Ruthless War Tactic Sen proposes poisoning all rivers upstream in the Land of Wind to quickly end the war, shocking Hatake Sakumo and Minato 58.
• Defeats Iwagakure Outposts Sen single-handedly infiltrates and destroys six Iwagakure strongholds, eliminating all ninjas and absorbing their abilities 77 78.
• Recalled to Konoha Sen is urgently recalled to Konoha from the front lines by village order 72.
• Kills Sakuraba Rokki Sen kills Sakuraba Rokki for attempting to rob Gokinteki City and inciting riots, demonstrating his commitment to protecting the city 94.
• Confronts Danzō for Debt Sen, as a Security Force captain, confronts Uchiha Sibo about a debt owed by Shimura Danzō and later confronts Danzō directly at the Shimura clan stronghold 97 98.
• Confronts Uchiha Sōgaku Sen encounters Uchiha Sōgaku, who attacks him with Mangekyo Sharingan and Amaterasu, but Sen uses Wood Release to defend himself 101.
• Defeats Uchiha Sōgaku Sen defeats Uchiha Sōgaku, using his dōjutsu Kuzugami no Shigan to compress space and time, and reveals his Wood Release ability 103.
• Kills Uchiha Sōgaku Sen reveals to Sibo that he killed Uchiha Sōgaku to prevent him from killing Sen and to expose Konoha's true intentions towards the Uchiha clan 105.
• Eliminates Bandits and Rogue Ninja Sen and Minato undertake a mission to deal with rogue ninja and bandits, with Sen swiftly eliminating 327 enemies, including three Chunin rogue ninja 108.
• Slays Shimura Saburo Sen and Minato encounter Shimura Saburo; Sen tortures and kills Saburo, then uses an illusion to show Minato Root's atrocities 111.
• Spreads Rumors Against Hiruzen Sen instructs Uchiha Police Force members to spread rumors that Shimura Danzō's human experiments might have been conducted with the Third's support, eroding trust in Hiruzen 126.
• Confronts Hiruzen Publicly Sen confronts Hiruzen in public, challenging his authority and demanding an explanation for the human experiments, revealing his power has surpassed Kage level 125.
• Kills Senju Tobirama Sen defeats the reanimated Second, severs and seals his arm, and helps establish the Uchiha clan's self-governance 132.
• Hiruko Defects to Madara Hiruko defects and joins Madara Uchiha 133 134.
• Kirigakure Envoys Visit Kirigakure envoys arrive in Konoha and directly request a meeting with Uchiha Sen at the Uchiha compound, largely disregarding the Hokage's office 136.
• Provokes Kirigakure Envoys Sen provokes Kirigakure's envoys, asking who will be the first to fall, leading to a tense standoff, and later decides to go to Sunagakure 137.
• Subdues the Kaguya Clan Sen kills a Kaguya clansman, acquires Shikotsumyaku, and accepts the clan's submission after Yakotsu argues for its survival 146.
• Kills Yū Sen uses High-Level Layered Realm and Dust Release: Boundary Severance Technique to destroy Yū's monstrous form 149.
• Purges Kirigakure Sen kills the Kirigakure ninja who continue to resist him, including numerous Anbu, to secure control of the village 156 157.
• Rebuilds Kirigakure Sen and Mei Terumi reorganize the village, use Wood Release and Shadow Clones for reconstruction, and begin winning the trust of its civilians and ninja 159 162.
• Suppresses the Eight-Tails Sen uses Wood Release to subdue Blue B after she transforms into the Eight-Tails 180.
• Defeats Kumogakure Sen defeats A and the Third Raikage's forces, then enters Kumogakure and promises its civilians protection from future oppression 192 194.

Themes

Sen's character is explored through several recurring themes, including his ruthless pragmatism, his ambition to unify the ninja world, and his complex relationship with power and justice. His strategic thinking and willingness to employ extreme measures are evident when he proposes poisoning all rivers upstream to end a war, shocking even Hatake Sakumo and Minato 58. This ruthlessness is further highlighted by his swift and brutal elimination of 327 bandits, demonstrating a lack of mercy and an efficient combat style that contrasts with typical ninja stealth 108. Sen's ultimate goal is to unify the ninja world and end wars, an ambition he openly declares 58 100 136. He believes that hatred is more easily sown than love in the ninja world, and that unifying the world is the only way to prevent tragedies like the one that befell his parents 100 105.

The theme of justice versus power is central to Sen's actions, particularly in his confrontation with Danzō, where he uses his authority as a Security Force captain to pursue justice against powerful figures 97. He also challenges the Uchiha clan's leadership, believing in upholding justice even against those who abuse their authority 4 97. Sen's strength and maturity are consistently emphasized, leading to a shift in power dynamics within the Uchiha clan, where members begin to seek his guidance 32 33 72. His ability to quickly learn and adapt, such as mastering Hatake's swordsmanship, further underscores his exceptional capabilities 53. Despite his growing power, Sen shows a protective nature towards his teammates and Mikoto, fostering camaraderie and loyalty 68 72. However, his actions also inspire awe and fear, with some viewing him as a "monster" or "legend" due to his overwhelming abilities 78 108.

Sen's Kirigakure campaign develops the tension between violent conquest and reform. He commits a bloody purge to remove forces he considers threats to stable rule, but subsequently directs the village toward reconstruction, public welfare, and institutional reform alongside Mei Terumi 156 157 162. His conquest of Kumogakure similarly reveals both exhaustion with the cycle of national hatred and a conviction that overwhelming power is necessary to prevent future suffering 194.