Uchiha Ensei
Naruto: No System? Time to Embrace Heresy!Contents
- 1Biodata
- 2Power Progression
- 3Background / History
- 4Appearance
- 5Personality
- 6Abilities & Skills
- 6.1Foreknowledge
- 6.2Ocular Power
- 6.3Tenseigan
- 6.4Sage Power and Chakra Mastery
- 6.5Ninjutsu and Forbidden Techniques
- 6.6Sealing Expertise
- 6.7Chakra Research and Artificial Life
- 6.8Little Ten-Tails and Divine Tree Research
- 6.9Yin–Yang Release and Resurrection Research
- 7Equipment / Weapons / Items
- 8Relationships
- 9Story Role / Major Arcs
- 9.1Minato Warning and Nine-Tails’ Attack
- 9.2Uchiha–Konoha Political Crisis
- 9.3Shisui, Obito, and Black Zetsu
- 9.4Cloud Delegation and Konoha’s Mobilization
- 9.5Ocular Evolution and the Little Ten-Tails
- 9.6Return to Konoha
- 9.7Tailed Beast Collection Campaign
- 9.8Madara Conflict and Uchiha Rebellion
- 9.9Rinnegan, Ten-Tails, and Yin–Yang Research
- 9.10Isshiki and Kara Investigation
- 9.11Land of Dawn and World Order
- 9.12Omnipotence Crisis
- 9.13Ōtsutsuki Conflict
- 10Notable Quotes
- 11Trivia
Contents
- 1Biodata
- 2Power Progression
- 3Background / History
- 4Appearance
- 5Personality
- 6Abilities & Skills
- 6.1Foreknowledge
- 6.2Ocular Power
- 6.3Tenseigan
- 6.4Sage Power and Chakra Mastery
- 6.5Ninjutsu and Forbidden Techniques
- 6.6Sealing Expertise
- 6.7Chakra Research and Artificial Life
- 6.8Little Ten-Tails and Divine Tree Research
- 6.9Yin–Yang Release and Resurrection Research
- 7Equipment / Weapons / Items
- 8Relationships
- 9Story Role / Major Arcs
- 9.1Minato Warning and Nine-Tails’ Attack
- 9.2Uchiha–Konoha Political Crisis
- 9.3Shisui, Obito, and Black Zetsu
- 9.4Cloud Delegation and Konoha’s Mobilization
- 9.5Ocular Evolution and the Little Ten-Tails
- 9.6Return to Konoha
- 9.7Tailed Beast Collection Campaign
- 9.8Madara Conflict and Uchiha Rebellion
- 9.9Rinnegan, Ten-Tails, and Yin–Yang Research
- 9.10Isshiki and Kara Investigation
- 9.11Land of Dawn and World Order
- 9.12Omnipotence Crisis
- 9.13Ōtsutsuki Conflict
- 10Notable Quotes
- 11Trivia
Biodata
| Feature | Information |
|---|---|
| Name | Uchiha Ensei (宇智波炎盛) |
| Alias(es) | Konoha Hero 50 |
| Species/Race | Human; Uchiha Clan |
| Gender | Male |
| Affiliation | Uchiha Clan; Konohagakure; Ninja Cat Clan; Land of Dawn 11 212 216 |
| Occupation/Role | Uchiha elder and de facto clan authority; designated future clan head; captain of the Uchiha Purge Squad; Special Jōnin; ruler of the Land of Dawn 11 50 105 113 212 |
| Status | Alive 244 |
| First Appearance | Chapter 1 |
| Age | Five when he first warns Minato; thirteen upon returning to Konoha after a two-year absence 1 50 |
Power Progression
| Stage / Realm / Level | Chapter | Notes |
|---|---|---|
| Chakra extraction and exceptional control | 1 | Extracted chakra at age three and developed unusually precise control at a very young age. |
| Chakra research combat techniques | 4 | After three years of experimentation, develops a powerful Fire Release attack and uses Reverse Summoning to move a stolen Nine-Tails chakra-sealing apparatus to Cat Ninja Village. |
| Anomalous ocular awakening | 8 | His unknown eyes awaken at age five; he claims they allow him to perceive the future and uses that knowledge to warn Minato of the Nine-Tails’ Attack. |
| Overwhelming ocular chakra state | 7 | Resists Shisui’s right-eye Kotoamatsukami completely and repels him with an invisible force; his chakra is described as an immense aggregate of ocular power. |
| Byakugan chakra reserve revealed | 9 | Reveals that 100,000 cloned Byakugan are sealed within his body, providing tailed-beast-scale chakra that destroys Danzō’s curse mark. |
| Stabilized Three-Tomoe Sharingan | 26 | Uses an Eight Trigrams Seal to suppress and gradually release the sealed Byakugan power, restoring his original Three-Tomoe Sharingan while leaving faint blue traces in his pupils. |
| Byakugan-based x-ray vision | 27 33 | Gains color-based vision through solid matter, but prolonged use severely exhausts his eyes and strains his Sharingan. |
| Immature Tenseigan | 31 | Black Zetsu identifies Ensei’s ocular power as an immature Tenseigan after his clone resists Kotoamatsukami. |
| Perfect Susanoo | 43 | Repairs and re-manifests a Perfect Susanoo using ocular power released from within his body. |
| Artificial Mangekyō Sharingan cultivation | 46 | The Little Ten-Tails’ evolutionary chakra enables him to produce Mangekyō Sharingan based on Kakashi’s Kamui and Shisui’s Kotoamatsukami. |
| Partial Tenseigan evolution | 47 | Uses a clone body and the ocular power sealed by the Eight Trigrams Seal to begin evolving Byakugan toward the Tenseigan; gains puppet-control capabilities. |
| Synthesized Tenseigan | 48 | Cultivates a Tenseigan in Hyūga-based clone bodies. It can create Truth-Seeking Orbs and absorb chakra at range, but has limited endurance and cannot replenish itself independently. |
| Basic Sage Mode | 60 | Achieves an initial Sage Mode through a specialized clone after months of work with Tsunade and Katsuyu, though it is initially unsuitable for combat. |
| Tenseigan Chakra Mode | 68 77 | Activates a green chakra mode with nine Truth-Seeking Orbs, Golden Wheel Reincarnation Explosion, enhanced repulsion, flight, and ranged chakra absorption. |
| True Tenseigan access | 74 | Establishes contact with the Giant Tenseigan on the moon through a Hyūga-derived clone and gains access to its far greater ocular power. |
| Chakra infused with his own will | 120 129 | Begins refining his heterogeneous chakra and sealed Byakugan power with chakra carrying his own will, allowing him to detect foreign soul fragments and reduce dependence on external powers. |
| Self-awakened Mangekyō Sharingan | 140 146 | His evolved Mangekyō can sustain a Perfect Susanoo without ordinary strain and manifests Kyōka Suigetsu and Amenotejikara. |
| Ten-Tails Jinchūriki clone | 137 140 | Produces a clone physically comparable to his original body, awakens its Sage Body and Wood Release, and transfers his soul into it to wield Ten-Tails Jinchūriki Chakra Mode. |
| Rinnegan and initial Yin–Yang Release | 145 150 | Temporarily acquires one of Madara’s Rinnegan, creates black chakra rods, and begins investigating Yin–Yang Release and Rinne Rebirth before returning the eye. |
| Advanced bodily restoration and artificial resurrection | 113 117 | Uses One’s Own Life Reincarnation, Hashirama Cells, and cultivation tanks to restore damaged clones; later clones and implants a replacement eye for Kakashi. |
| Sage Body and Karma-like bestowal | 169 | Possesses a Sage Body with chakra reserves at least comparable to the Eight-Tails and develops a crude Karma-like mark that can transfer and stabilize his power in others. |
| Chakra-as-weapon mastery | 166 172 | Reaches a level where conventional ninjutsu is largely unnecessary, manipulating condensed chakra directly for offense, defense, restraint, and cellular control. |
| Absorption-resistant chakra | 172 | Isshiki discovers that Ensei’s chakra cannot be absorbed; each strand bears Ensei’s will and behaves in a manner comparable to a potential Karma imprint. |
| Isshiki ocular-technique replication | 191 207 | Replicates the techniques of Isshiki’s “Black Eye,” including Sukunahikona, Daikokuten, and dimensional portals, after observing them through transplanted eyes. |
| Nine-Tomoe Sharingan | 183 186 | Evolves a Nine-Tomoe Sharingan that surpasses most Rinnegan, copies Madara’s Rinnegan techniques, and is described as potentially exceeding the Rinnegan’s level. |
| Refined Six Paths-like Sage Mode | 206 | Abandons the cumbersome Susanoo to enter a refined, seal-less Sage Mode resembling the Sage of Six Paths’ use of Sage Power. |
| True Sage Mode | 232 | Fuses Sage Power and chakra into a higher-tier Sage Chakra state while using Kyōka Suigetsu to briefly control Kaguya’s five senses. |
| Incomplete Omnipotence and Reflection | 206 207 | Obtains the ocular powers Reflection and Omnipotence from Code’s Sharingan, but lacks the chakra capacity to activate either effectively. |
Background / History
Ensei was orphaned as an infant and received limited material support from the Uchiha Clan. His talent earned him better treatment than most children, including food, instruction, and the care of his cousin Uchiha Inabi, but he largely developed through independent study and planning. He had extracted chakra by age three and understood that raw talent alone could not protect him from future Mangekyō Sharingan users or Konoha’s hostility toward the Uchiha. 1 2
At age five, Ensei concluded that Minato Namikaze’s appointment as Hokage began the countdown to the Nine-Tails’ Attack and the Uchiha Clan Massacre. He created a disguised Shadow Clone, removed all detectable scent from an envelope, and delivered Minato intelligence concerning Obito, Kushina’s childbirth, and the planned attack. The clone’s delayed return caused Ensei severe anxiety and mental pain, but its memories confirmed that Minato had received the warning. 1 2
Ensei chose medical ninjutsu and chakra science over conventional Uchiha combat training. With Inabi’s support and Fugaku’s approval, he studied Konoha’s medical records, established a summoning contract with the Ninja Cat Clan, and built a laboratory near Cat Ninja Village. During the Nine-Tails’ Attack, he ignored Inabi’s evacuation order, ambushed chakra thieves, and seized a sealing device containing scattered Nine-Tails chakra for research. 3 4
By age ten, his experiments and unusual ocular power made both Konoha and the Uchiha suspicious of him. After defeating Shisui’s attempt to use Kotoamatsukami, Ensei openly disclosed his future knowledge to Shisui and Fugaku. He forced the issue of Danzō’s stolen Sharingan, assaulted Danzō in the Hokage’s office, and leveraged his power into political concessions for the Uchiha Clan. Fugaku subsequently named him an elder and intended successor. 7 8 9 10 11
Over time, Ensei’s initially improvised research evolved into a vast program involving clone cultivation, Tailed Beast chakra, Sage Power, ocular transplantation, artificial life, and Yin–Yang Release. Orochimaru’s research later confirms that Ensei’s ability to direct cellular growth is an innate talent rather than a reproducible technique, forcing him to recognize both the value and the limits of his self-taught methods. 70 117
After becoming strong enough to contend with Madara and the Ōtsutsuki, Ensei increasingly treats his original body, clones, and sealed powers as separate assets to be managed. He seeks power that belongs wholly to himself, fearing that reliance on the Ten-Tails, foreign ocular power, or Hashirama Cells could turn him into another vessel for Kaguya or another external will. 129 137 150 207
Appearance
Ensei’s appearance is closely tied to the unstable evolution of his eyes. His ordinary Uchiha eyes can return to a Three-Tomoe Sharingan state, but his higher ocular states have produced increasingly abnormal coloration and patterns. 6 26 50
- His early anomalous state has white pupils, crimson irises, and pale-blue halos. 6
- When releasing immense ocular power, he can be enveloped in a deep-blue chakra cloak. 18
- After his Tenseigan-related evolution, his eyes appear pale blue, causing gate guards to question whether he is truly an Uchiha. 50
- He was ten during his confrontation with Shisui and Fugaku, and thirteen when he returned to Konoha after two years away. 7 50
- His later evolved Mangekyō resembles an Eternal Mangekyō Sharingan in performance, allowing him to use a Perfect Susanoo without ordinary ocular backlash. 90
- His ultimate known ocular state is a Nine-Tomoe Sharingan, which retains the general form of a Sharingan while displaying power beyond most Rinnegan. 183 186
- His refined Sage Mode lacks the conspicuous facial markings associated with conventional Sage Modes. 206
Personality
Ensei is cautious, analytical, and intensely survival-driven. His early actions are built around secrecy: he uses clones, masks, scent removal, false routines, transformations, and contingency plans rather than trusting superior opponents or political institutions. Even after gaining power, he remains suspicious of traps and prefers to force enemies to approach ground he has prepared. 1 24 29 48
He is bluntly contemptuous of leaders he considers weak or hypocritical, particularly Fugaku, Hiruzen, Danzō, and Shisui. He repeatedly uses future knowledge to pressure others into action, but does not regard prophecy as infallible after his interventions alter the timeline. 8 11 23
His research is pragmatic to the point of moral detachment. He considers cloning to be the creation of new life, uses condemned criminals and captured enemies as subjects, and treats bloodlines, bodies, souls, and ocular powers as materials for experimentation. Nevertheless, he states that his goal is to ensure that neither he nor those he cares about can be harmed. 15 30
As his power grows, Ensei becomes increasingly authoritarian and willing to impose his judgment on clans, villages, daimyō, and even the Uchiha Clan itself. He generally avoids pointless slaughter, but considers consent, established authority, and diplomacy secondary when he believes survival or research requires action. 71 90 105 134
Despite his immense ambition, Ensei distinguishes between power he can control and power that controls its user. He rejects premature Hashirama-cell fusion and later refuses to become a Ten-Tails Jinchūriki, prioritizing personal autonomy over immediate gains. 102 207
Abilities & Skills
Foreknowledge
Ensei claims that his anomalous eyes allow him to see the future, using this knowledge to identify Obito, predict the Nine-Tails’ Attack, and expose the projected destruction of the Uchiha Clan. 8 9
- Uses future knowledge as political leverage against Fugaku, Shisui, Hiruzen, and Danzō. 8 9 10
- Recognizes that saving Kushina and Minato has changed the timeline enough to make later events unpredictable. 23
- Mixes truth with misinformation when discussing Black Zetsu in order to hide the extent of his knowledge. 34
- Eventually acknowledges that the original timeline is no longer reliable and increasingly relies on personal investigation, experimentation, and surveillance instead. 97 102 105
Ocular Power
Ensei’s original Sharingan became entangled with the chakra of 100,000 sealed cloned Byakugan, creating an unstable ocular state that initially resembles neither a normal Sharingan nor a true Tenseigan. 9 26
- Resists Shisui’s Kotoamatsukami, with the technique dissipating into his immense ocular chakra. 7
- Produces invisible repulsive force capable of blasting Shisui through a wall. 7
- Forms skeletal and later complete Susanoo-like chakra constructs. 8 43
- Uses Byakugan-derived x-ray vision to inspect bodies, seals, and hidden material. 27 33
- Suffers severe visual exhaustion after extended x-ray vision, and the Byakugan power strains his Sharingan. 33
- Evolves a self-awakened Mangekyō Sharingan capable of sustaining a Perfect Susanoo without the usual strain. 90 140
- Uses Kyōka Suigetsu, an ocular genjutsu that controls an opponent’s five senses and can conceal his actions from even Madara. 146 149
- Uses Amenotejikara for spatial displacement and battlefield manipulation. 146 149
- Possesses a Kamui distinct from Obito’s, initially unable to attack Obito across their separate dimensions but later developing passive spatial perception sufficient to invade dimensional spaces. 106 125
- Evolves the Nine-Tomoe Sharingan, which can replicate Madara’s Rinnegan techniques and Isshiki’s Black Eye techniques. 186 191 207
- Possesses the dormant ocular powers Reflection and Omnipotence, though his chakra reserves remain insufficient to employ them. 206 207
Tenseigan
Ensei develops a Tenseigan through Hyūga-derived clone bodies cultivated by the Little Ten-Tails. Its power is stated to approach the Rinnegan’s level, though it initially remains dependent on external chakra sources. 47 48
- Creates Truth-Seeking Orbs. 48
- Absorbs chakra from a distance. 48
- Uses puppet-control power to animate and manipulate clone bodies. 47
- Has chakra capacity comparable to half of the Eight-Tails in its early synthesized state. 48
- Cannot replenish itself naturally; when depleted, it must draw from his sealed Byakugan chakra or another external source. 48
- Activates Tenseigan Chakra Mode, granting green chakra armor, flight, advanced gravitational control, nine Truth-Seeking Orbs, and Golden Wheel Reincarnation Explosion. 68 77
- Uses Tenseigan chakra to absorb Madara’s chakra at range, with physical contact greatly accelerating the drain. 77
- Accesses the Giant Tenseigan on the moon through a Hyūga-derived clone. 74
- Ultimately transfers the moon-derived Tenseigan power and a vast portion of his Byakugan-derived ocular power to Hinata Hyūga, choosing to resolve the instability inside his own body. 169 183 207
Sage Power and Chakra Mastery
Ensei’s Sage Power develops from an initially clone-dependent experiment into a refined, Six Paths-like Sage Mode. 60 206
- Learns the basics of Sage Mode through experimentation involving Tsunade, Katsuyu, and specialized clones. 60
- Possesses a Sage Body with chakra reserves no lower than the Eight-Tails’ and rising rapidly. 169
- Enters a refined Sage Mode with no overt energy leakage or conventional facial markings. 206
- Fuses Sage Power and chakra into a higher-order Sage Chakra to enter True Sage Mode. 232
- Uses chakra directly as his primary weapon, forming restraints, crushing force, barriers, and attacks without relying on conventional ninjutsu. 166 172
- Imprints his will into chakra, making it resistant to absorption and allowing it to influence cellular growth with exceptional precision. 120 172 222
Ninjutsu and Forbidden Techniques
Ensei rapidly learns and adapts techniques across multiple disciplines, favoring methods that improve mobility, survival, sealing, or experimentation. 3 34 43
- Shadow Clone Technique — Modifies clones for espionage, long-term transformation, combat, and remote experimentation; recalled memories can inflict severe mental strain on his original body. 1 2 21
- Transformation and Body Flicker Techniques — Uses transformation for disguises, infiltration, and obtaining research funds; uses Body Flicker for rapid movement. 1 3 4
- Izanagi — Learns the Uchiha forbidden technique and uses a Three-Tomoe Sharingan embedded in replicated Hashirama Cells to overwrite a fatal outcome during Black Zetsu’s attack. 21 32 33
- Flying Thunder God Technique — Memorizes the technique from the Book of Seals and masters fixed-point teleportation, though he initially cannot use its combat-oriented second stage. His later use of marks allows casual travel across the Ninja World and even to the moon. 34 43 74 156
- Spirit Transformation Technique — Transfers his consciousness into prepared clone bodies without immediately abandoning his original body; later, his soul can remain separated from his body for extended periods and move between specially prepared vessels. 46 47 48 119 140
- Impure World Reincarnation — Learns and tests the technique while researching the relationship between bodies, clones, and souls. 34 70
- Reaper Death Seal — Uses the technique through a Tenseigan-controlled clone against Madara, later develops enough sealing mastery and raw power to partially dismantle it. 109 207
- One’s Own Life Reincarnation — Revives severely damaged clones, though their vitality remains insufficient to erase the consequences of the Eighth Gate completely. 113
- Fire Sealing Method — Seals Amaterasu flames during his confrontation with Itachi. 108
- Sage Art: Gate of the Great God — Uses a Sage-powered restraint against Madara, though Madara’s power breaks it. 109
Sealing Expertise
Ensei begins with basic seals, then studies under Kushina Uzumaki and gains access to advanced Uzumaki methods. 4 26
- Masters the Four Symbols Seal and applies an Eight Trigrams Seal to regulate the Byakugan chakra stored inside his body. 26
- Uses seals to restrain White Zetsu specimens and protect research assets. 22
- Builds barriers, Flying Thunder God marks, traps, and layered defenses around the Little Ten-Tails and his laboratory. 48
- Seals Black Zetsu with the Totsuka Blade, reinforces the containment with a Four Symbols Seal, then seals the blade itself through the Reaper Death Seal. 87
- Uses sealing vessels, Six Paths Tools, and the Kamui Dimension to store dangerous entities including Hidan, Isshiki, Tailed Beast chakra, and the Ten-Tails. 102 202 207
- Is capable of unravelling a Reaper Death Seal through a combination of advanced sealing knowledge and overwhelming power. 207
Chakra Research and Artificial Life
Ensei treats chakra as a biological and evolutionary subject. His work includes ocular cloning, Hashirama Cell research, emotional drugs, cellular viruses, artificial humans, and soul-related experimentation. 15 30 34 35 36
- Creates artificial human units, including Zero-One, Zero-Two, Zero-Three, and the Nohara Rin Unit. 16 31
- Uses the Nohara Rin Unit, equipped with a Three-Tomoe Sharingan, as a psychological weapon intended to target Obito. 16
- Develops Exploding Flies and other living chakra weapons; one such creation destroys Pain’s Planetary Devastation. 20
- Clones Byakugan and Sharingan, though early cloned Sharingan only reach the One-Tomoe stage. 35
- Conducts emotional experiments using drugs and genjutsu to measure links between emotion, hormones, thought, chakra, and the soul. 30
- Possesses an innate ability to guide cellular growth with chakra, which underlies his cloning and cannot be reproduced by Orochimaru. 70
- Uses life-force-based medical ninjutsu to create and implant a replacement eye for Kakashi. 117
- Creates specialized taijutsu clones designed to survive use of the Eight Gates and restores them using Hashirama Cells, cultivation tanks, and vitality-specialized clones. 109 113
- Creates Ten-Tails Jinchūriki clones with Sage Bodies, Wood Release, artificial Mangekyō Sharingan, and Rinnegan relay functions. 137 140 153
- Uses nano-surveillance robots to follow Isshiki through a space-time passage. 172
Little Ten-Tails and Divine Tree Research
The Little Ten-Tails is a mutated Divine Tree fragment that Ensei names and cultivates after it begins absorbing chakra and natural energy. It returns an evolutionary chakra that can alter nearby material. 46
- Produces the evolutionary feedback that enables Ensei to cultivate artificial Mangekyō Sharingan. 46
- Obeys Ensei’s direct commands despite an instinctive hunger for the Dragon Vein’s energy. 47
- Cultivates Tenseigan-bearing clone bodies using natural energy and Byakugan chakra. 48
- Remains a controlled but heavily secured asset; Ensei surrounds it with barriers, marks, explosives, puppets, and contingency measures. 48
- Detects that Ten-Tails-derived flesh contains scattered spiritual fragments that could develop into a Ten-Tails consciousness if allowed to grow freely. 129
- Later creates a Replica Divine Tree infused with his own will, treating it as a controllable puppet rather than an independent organism. 209
- Extracts and seals chakra from the Ten-Tails but recognizes that it cannot be wholly removed through chakra-sealing methods because it is also a biological weapon that absorbs Natural Energy. 194
Yin–Yang Release and Resurrection Research
Ensei pursues Yin–Yang Release as the principle underlying life creation, Truth-Seeking Orbs, the Rinnegan, and resurrection. 145 150
- Creates black chakra rods after temporarily receiving Madara’s Rinnegan, using them as an elementary manifestation of Yin–Yang Release. 145
- Determines that Rinne Rebirth creates bodies through Yin–Yang Release and may be able to restore souls taken by the Reaper Death Seal. 150
- Fails to revive Hagoromo through Rinne Rebirth without a prepared body; the vitality-specialized clone operating the Rinnegan disintegrates. 150
- Identifies Black Zetsu as an inferior lifeform produced through Yin–Yang Release rather than an incomprehensible entity. 207
- Considers resurrection techniques dangerous because of possible cosmic consequences or “divine punishment,” and increasingly delegates such research to expendable clones. 156
Equipment / Weapons / Items
- Former sealed Byakugan reserve — Ensei originally sealed 100,000 cloned Byakugan inside his body as a massive source of ocular power and chakra. He later refines and transfers much of this unstable power to Hinata Hyūga. 9 26 169 183 207
- Exploding Flies — Living chakra bombs used for ambushes and large-scale destruction. 20 24
- “Buu” / “Patrick Star” — A massive Exploding Fly used to destroy Planetary Devastation. 20
- Artificial human units — Combat and surveillance creations, including the Zero series and Nohara Rin Unit. 16 31
- Flying Thunder God kunai and marks — Used for fixed-point emergency teleportation, securing the Dragon Vein site, and maintaining long-range access to allies and locations. 43 47 74 116
- Little Ten-Tails fragment — A sealed sample retained as a precaution against the main organism. 48
- Totsuka Blade — An inherited Uchiha artifact used to seal Black Zetsu before Ensei seals the blade itself through the Reaper Death Seal. 77 87 207
- Kamui Dimension — His personal extradimensional storage and laboratory space, protected by layered seals and used to confine dangerous prisoners and research assets. 102 207
- Nano-surveillance robots — Miniaturized devices deployed to follow Isshiki through a space-time passage. 172
- Six Paths Tools — Used to store the captured Ten-Tails within the Kamui Dimension. 202
- Boweishen — A high-grade Ōtsutsuki weapon recovered from the Chakra Fruit refined from Kinshiki. 232
Relationships
- Uchiha Inabi — Cousin, caretaker, and early mentor. He initially opposes Ensei’s interest in medical ninjutsu but later supports his training and Ninja Cat summoning contract. 2 3
- Uchiha Fugaku — Clan head who becomes Ensei’s political counterpart. After Ensei forces concessions from Konoha, Fugaku names him an elder and intended successor. Fugaku later yields practical authority over the clan to Ensei and cannot oppose him even with his Mangekyō Sharingan. 8 11 105 113
- Uchiha Shisui — Distrustful clansman and ideological opponent. Ensei resists his Kotoamatsukami, warns him of his projected fate, and later helps free him from Black Zetsu’s control. Shisui is subsequently killed by Uchiha Hikari. 7 8 32 33 87 113
- Hiruzen Sarutobi — Political adversary and reluctant collaborator. Ensei repeatedly forces Hiruzen into compromises, access to forbidden techniques, and support for Uchiha interests before Hiruzen is killed in battle. 10 11 22 34 87
- Minato Namikaze — Early recipient of Ensei’s warning and his most important political intermediary within Konoha. Minato repeatedly manages the diplomatic consequences of Ensei’s actions, while Ensei respects his authority only conditionally. 1 72 82 90 116
- Kushina Uzumaki — Sealing teacher and trusted ally. She allows Ensei into her sealing space, trains him in Uzumaki techniques, fights beside him against Black Zetsu, and assists during his later sealing research. 26 31 32 87
- Kakashi Hatake — Uneasy mission partner. Ensei uses clones to conceal his real involvement, mocks Kakashi’s limitations, and secretly places a failsafe in Kakashi’s Sharingan. After Kakashi loses the Sharingan, Ensei creates and implants a replacement ordinary eye. 16 20 117
- Uchiha Itachi — Former research subject and ideological opponent. Ensei exposes him to projected future events, contributes to his artificial Mangekyō awakening, releases him from a two-year Izanami, defeats him during the Uchiha conspiracy, and eventually returns his original Mangekyō Sharingan. 21 36 50 108 113 176
- Obito Uchiha — Major adversary. Ensei reveals Obito’s identity, challenges his Eye of the Moon Plan, attacks him through clones and prepared traps, and later discovers that their similar Kamui abilities operate through distinct dimensions. 9 23 24 106 109
- Madara Uchiha — Rival, recurring enemy, and eventual political collaborator. Ensei repeatedly battles and manipulates Madara, exposes Black Zetsu’s betrayal, temporarily borrows a Rinnegan, and persuades Madara to build a centralized unified state rather than pursue Infinite Tsukuyomi. 77 108 145 186
- Orochimaru — Transactional research partner and frequent source of suspicion. Ensei trades a White Zetsu body for Orochimaru’s research, employs him to capture jinchūriki and investigate Kirigakure, and later coerces him with Kotoamatsukami. 70 82 83 134 135
- Tsunade — Research collaborator and later a source of warnings about the consequences of resurrection. Ensei consults her on Uchiha Hikari and Sage Power, but dismisses much of her concern over divine punishment. 58 60 90 156
- Hinata Hyūga — A powerful ally and recipient of Ensei’s Tenseigan power. He trains her, grants her a Karma-like power mark, and later transfers the Giant Tenseigan’s power to her; her completed Tenseigan makes her one of the few people capable of threatening him. 161 169 183 203 226
- Uchiha Hikari — A dangerous Uchiha with an unusual Mangekyō Sharingan. Ensei investigates her history, permits her to disclose information to Minato, and later determines that her immunity to Omnipotence derives from power absorbed through Hinata’s mark. 89 176 203
- Black Zetsu — Long-term enemy and research subject. Ensei seals him with the Totsuka Blade, later removes him from Madara’s Ten-Tails body and imprisons him again, ultimately identifying him as an inferior Yin–Yang Release lifeform and offering freedom in exchange for Ōtsutsuki intelligence. 87 206 207
- Ōtsutsuki Isshiki — Major Ōtsutsuki adversary and exceptionally valuable captive. Ensei defeats and imprisons Isshiki, copies his ocular techniques, and keeps his near-death body in suspended time for research. 172 174 191 207
- Ōtsutsuki Urashiki — Captured Ōtsutsuki informant. Ensei follows him into Kaguya’s dimension, forces him to reveal Ōtsutsuki history, and allows Hinata to defeat him before extracting his final intelligence. 222 226 227
- Ninja Cat Clan — Summoning allies who become closely aligned with Ensei and guard his laboratories and research materials. Their later inheritable Sage Mode raises them to a force comparable to a major hidden village. 3 6 7 185
- Little Ten-Tails — Controlled experimental organism and cultivation tool. Ensei treats it as a dangerous subordinate rather than a companion. 46 47 48
Story Role / Major Arcs
Minato Warning and Nine-Tails’ Attack
Ensei begins the story by trying to prevent the coming disaster through information rather than force. His warning does not stop the Nine-Tails’ Attack, but Minato and Kushina survive, immediately altering the expected future. Ensei exploits the attack to seize rare Nine-Tails chakra for his research. 1 2 3 4 23
Uchiha–Konoha Political Crisis
After revealing his future knowledge and power to Fugaku and Shisui, Ensei openly confronts Danzō and Hiruzen over stolen Sharingan and Root experimentation. He secures concessions for the Uchiha, becomes an elder, and forms the Purge Squad to protect the clan’s interests and target Sharingan exploiters. 8 9 10 11
Shisui, Obito, and Black Zetsu
Ensei treats Shisui’s capture as both a rescue crisis and a source of intelligence. His battles with Obito and Black Zetsu rely on Shadow Clones, artificial humans, sealing, and explosive traps. Though Black Zetsu initially escapes with intelligence on Ensei’s abilities, Ensei later defeats and seals him with the Totsuka Blade. 15 16 17 18 19 20 21 22 23 24 31 32 33 87
Cloud Delegation and Konoha’s Mobilization
Ensei intercepts the Cloud Village’s attempt to abduct Hinata, uses the event to obtain Hyūga cells, and threatens Cloud with war. His actions shift practical authority away from Hiruzen, culminating in his leadership of a rapid Konoha military mobilization against Cloud Village. 34 36 37 38
Ocular Evolution and the Little Ten-Tails
Following an unsuccessful attempt to force his own Mangekyō awakening, Ensei discovers and cultivates the Little Ten-Tails. He uses it to create artificial Mangekyō Sharingan, synthesize a Tenseigan in clone bodies, and begin pursuing an Ōtsutsuki-like evolution while keeping his original body as experimental material. 45 46 47 48
Return to Konoha
After two years away, Ensei returns to Konoha with pale-blue eyes and a reputation as a Konoha hero. He discovers that Itachi has remained trapped in a modified Izanami for the entire period and personally releases him. 50
Tailed Beast Collection Campaign
Ensei begins collecting portions of the Tailed Beasts’ chakra to prevent Madara from monopolizing them. He forcibly takes chakra from Roshi, Han, Fū, and Yagura, kills Yagura after extracting the Three-Tails’ chakra, and continues searching for Utakata and the Six-Tails. 68 71 72 83 134
Madara Conflict and Uchiha Rebellion
Ensei’s clashes with Madara escalate from tests of Susanoo and Tenseigan power into direct ideological conflict over the Infinite Tsukuyomi. When Uchiha hardliners, Itachi, and Obito plot to seize Ensei’s eyes and align with Madara, Ensei crushes the conspiracy, defeats Itachi, and forces the clan to choose between following Madara or himself. 77 105 106 108 109 113
Rinnegan, Ten-Tails, and Yin–Yang Research
After borrowing one of Madara’s Rinnegan, Ensei investigates Yin–Yang Release, Rinne Rebirth, and the mechanics of Ten-Tails Jinchūriki power. He creates specialized Ten-Tails Jinchūriki clones and pursues resurrection research, but grows increasingly wary of the costs of powers that can influence their user. 137 140 145 150 153
Isshiki and Kara Investigation
Ensei investigates Kara and Jigen, eventually identifies Jigen as Ōtsutsuki Isshiki’s vessel, and confronts Isshiki directly. Although Isshiki temporarily traps him, Ensei later defeats, dissects, and imprisons him for research while copying the abilities of Isshiki’s Black Eye. 156 165 172 174 191
Land of Dawn and World Order
As Madara establishes the Land of Dawn, Ensei becomes increasingly involved in reshaping the Ninja World’s political structure. He advises Madara to build a centralized nation with unified law and administration, later takes control of the Land of Dawn himself, and treats its stability as necessary for the world he intends to inhabit. 181 186 212 216
Omnipotence Crisis
After Code’s ocular power alters the memories and hostility of nearly the entire Ninja World, Ensei finds himself opposed by the world at large. Only Hinata and Hikari remain unaffected due to their connection to his power. Unable to activate the incomplete Omnipotence he obtains from Code’s Sharingan, Ensei rejects the dangerous shortcut of becoming a Ten-Tails Jinchūriki and searches for another solution. 202 203 206 207
Ōtsutsuki Conflict
Ensei confronts Urashiki, extracts Ōtsutsuki history from him, and uses Hinata’s completed Tenseigan as a test against Urashiki’s transformed state. His subsequent conflicts involve Momoshiki, Kaguya, True Sage Mode, and the growing realization that the major Ōtsutsuki threats exceed the assumptions of the original timeline. 222 226 227 232 237 244
Notable Quotes
“In fact, you really would!” 10
“As long as no one can harm me or anything I care about around me, that's enough.” 30
“Next, you have two choices: follow Madara Uchiha, or follow me!” 113
“Only becoming the Ten-Tails Jinchūriki is unacceptable.” 104
Trivia
- Ensei’s deliberate attempt to awaken his own Mangekyō Sharingan fails; the failure instead leads to the discovery of the Little Ten-Tails. 45 46
- His original Three-Tomoe Sharingan is restored after he seals the unstable Byakugan-derived power within his body. 26
- He regards conventional morality as inapplicable to his research, though he initially requests condemned criminals rather than arbitrary civilians as experimental subjects. 15 30
- He returns to Konoha at age thirteen after being absent for two years. 50
- Orochimaru determines that Ensei’s cloning is not a conventional technique but the result of his unique ability to direct cellular growth with chakra. 70
- Ensei’s Nine-Tomoe Sharingan can copy ocular techniques that normally belong to the Rinnegan and Isshiki’s Black Eye. 186 207
- He ultimately prefers personally controlled power over becoming a Ten-Tails Jinchūriki, despite recognizing the immense increase in chakra such a transformation would provide. 207