Biodata

Feature Details
Name Uchiha Izuna (泉奈)
Gender Male
Affiliation Uchiha Clan during the Warring States Period; later Tetsuya’s business operation and the Chiba Grand Hotel; subsequently the Uchiha community in the Land of Grass and the Federation 29 36 42 205 445 528.
Occupation/Role Former Uchiha second-in-command and Madara’s strategist; later hotel protector, business assistant, ninja instructor, and protector of the surviving Uchiha. Also receives the title Mirror Hashira during an adventure in another world 29 36 49 64 184 201 499.
Family Younger brother of Madara Uchiha; states that neither brother left descendants. His possible blood relationship to Shisui is raised but not established 21 45 202.
Status Resurrected by Tetsuya; according to Tetsuya, cannot die while Tetsuya remains alive. Later confirmed to have reached the Six Paths level 29 44 470.
First Appearance His likeness appears as Tetsuya’s disguise 11. The genuinely resurrected Izuna is first confirmed in the supplied material 29.

Power Progression

Stage / Realm / Level Chapter Notes
Mangekyō Sharingan — original lifetime 21 33 An established Mangekyō wielder before his death, described as a shinobi “without a single weakness.” The circumstances of his original awakening are not provided.
Resurrection and restored peak condition 29 36 Tetsuya’s recruitment system restores him to life. His body returns to peak condition and continues growing stronger.
Post-resurrection combat growth 35 36 Trains against replicas created by Tetsuya’s Mirror Beyond the Clouds and learns numerous powerful ninjutsu from him.
Eternal Mangekyō Sharingan and Hashirama Cells 47 48 Upgrades his eyes using system-produced, kin-compatible Mangekyō Sharingan and receives an injection of Hashirama Cells. His maximum ocular power begins increasing continuously; Rinnegan evolution is initially only a possibility.
Stalled Rinnegan evolution and space-time research 184 189 Feels close to awakening the Rinnegan but suspects a missing trigger. Begins studying techniques to counter Tobirama’s Flying Thunder God.
Seventh Gate and combined Susanoo–Flying Thunder God combat 190 Combines the Seventh Gate, Susanoo clones, and a Flying Thunder God attack to shatter Tetsuya’s golden Susanoo, without injuring Tetsuya himself.
Rinnegan awakening 201 202 Awakens during combat with Obito. His unfamiliarity with the replacement ocular abilities allows Obito to escape. Reveals the ability to split and splice space and uses it to evacuate Uchiha survivors.
Mature Rinnegan space-time mastery 291 424 432 Assigned to block Urashiki’s spatial escape; later described as having mastered his space-time ability and being able to counter Obito decisively.
Six Paths level — confirmed 469 470 Explicitly identified as Six Paths Izuna. The supplied material does not specify the exact moment or method of this advancement.
Cross-world swordsmanship development 491 499 Demonstrates healing and earns the title Mirror Hashira for perfectly reproducing swordsmanship after seeing it once. This title is distinct from his chakra-based power level.

Background / History

Warring States Period and Death

Izuna served as the Uchiha Clan’s second-in-command and Madara’s strategist. He devised tactics and broad plans, while Madara led the clan into battle using his overwhelming strength 29 49.

He fought Tobirama Senju for years and was killed by him before Konoha’s founding. Izuna remembers the fatal attack as an ambush and a stab in the back. His eyes later enabled Madara to obtain the Eternal Mangekyō Sharingan 21 44 48.

Izuna later identifies the attack as Flying Thunder God Slash, explaining that it damaged several internal organs and caused massive internal bleeding that medicine of the era could not treat 469. The parallel-world version of his final hours shows him calmly explaining the Mangekyō’s blindness and the possibility of gaining greater power through a loved one’s eyes, then asking Madara to take his eyes and continue forward 468.

Tetsuya’s Impersonation

During the First Shinobi World War, Tetsuya adopted Izuna’s appearance to rescue Tobirama from Kumogakure shinobi. Huang Bai reinforced the transformation with genjutsu, allowing Tetsuya to claim that Izuna had returned from the Pure Land 11 12.

The deception convinced Tobirama. He attributed the impostor’s limited techniques to an incomplete recovery after resurrection and later warned Hiruzen not to push the Uchiha too hard, fearing Izuna might return to lead them against Konoha. The actual Izuna remained dead throughout this encounter 13 15 21.

When reports of “Madara” appearing during the Second Shinobi World War alarm Konoha’s leadership, Hiruzen finally shares Tobirama’s account with Danzo, Koharu, and Homura. The supposed precedent of Izuna’s resurrection makes them more willing to believe that Madara could also have returned 61 62.

Genuine Resurrection

Tetsuya subsequently pursued a real means of reviving Izuna. An early recruitment attempt yielded only twenty of the required hundred fragments. By their conversations at the Chiba Grand Hotel, Tetsuya had successfully resurrected him using a substantial portion of his business earnings 24 29.

Izuna initially questioned why someone as powerful as Tetsuya would remain a merchant. After losing at least ten consecutive matches by exactly half a move, he recognized that Tetsuya was vastly stronger. Tetsuya explained that villages and international alliances had replaced the clan-based political order Izuna knew, making old-style territorial conquest impractical 29.

Espionage and Hotel Protection

Izuna identified a hidden Land of Lightning religious symbol among the courtesan Mikiko’s tattoos and suspected espionage. When two Kumogakure shinobi investigated Tetsuya, he captured them with Sharingan genjutsu. They revealed that Mikiko was the undercover special jōnin Okai 30 32.

At Tetsuya’s request, Izuna planted suggestions that preserved the merchant’s harmless public image and turned the intruders into informants. Their reports later included Kumogakure’s plan to abduct an Uzumaki orphan bound for Konoha 33 35.

Izuna declined an invitation to visit modern Konoha or its Uchiha Clan, saying the village had caused Madara too much pain. Instead, he stayed behind to guard the Chiba Grand Hotel and help Tetsuya’s business prosper, hoping that greater wealth would hasten Madara’s resurrection 36.

Second Shinobi World War

The prospect of village-scale warfare excited Izuna, who suggested that he, Tetsuya, and Kakuzu might enter as an independent faction against all five great villages. Tetsuya rejected fighting in favor of profiting from the conflict 42.

Izuna questioned Tetsuya’s policy of supplying rival villages equally and called his approach frightening after learning that prolonging the war meant continued profits. He also learned that Tetsuya’s stated resurrection order placed Tobirama before Madara, provoking proposals to kill or seal Tobirama after his revival 44.

During the war, Izuna upgraded to the Eternal Mangekyō Sharingan and tested his Susanoo against Tetsuya’s. He continued assessing military developments, predicting that Konoha and Sunagakure would cooperate to eliminate Amegakure before settling their own rivalry—a forecast Tetsuya disputed 48 49.

Upon meeting Nagato, Izuna senses that the boy’s unusual eyes are strangely close to him. After learning that they are the Rinnegan, he reasons that they must be transplanted and deduces that they belong to Madara. His reasoning draws on Nagato’s apparent Uzumaki heritage, his young age, and the absence of comparable ocular power among the modern Uchiha 55 56.

Izuna subsequently appears on the Amegakure battlefield in a white mask, impersonating Madara alongside Tetsuya’s “Tobi.” He defeats Hanzo with Perfect Susanoo; Tetsuya later identifies him as the white-masked fighter who crippled Hanzo with a single slash. Tsunade’s remarks about Madara provoke his killing intent, but Tetsuya redirects him toward their objective 58 61 130 372.

He also becomes an instructor to Nagato, Konan, and Yahiko, testing their chakra natures and teaching the fundamentals of ninja tools and training 64.

Tobirama’s Resurrection and Renewed Rivalry

After Tobirama’s resurrection, the two resume their longstanding arguments. Izuna rejects Tobirama’s description of the Uchiha as a dangerous “blade,” blames him for Madara’s departure from Konoha, and initially maintains that the modern clan is no concern of his. Nevertheless, he questions Tobirama about the clan’s predicted destruction, while Tetsuya prevents their hostility from escalating into a fight 171.

When Tobirama becomes absorbed in research, Izuna complains that he has been left doing Tobirama’s Ninja Academy work. Their subsequent clash threatens the capital through Susanoo and Mutually Multiplying Explosive Tags, forcing Tetsuya to move them into the wilderness. Tobirama escapes with Flying Thunder God, prompting Izuna to study seriously for a counter and temporarily reducing their frequent brawls 184 189.

During a later fight inside Tetsuya’s Divine Kingdom, Izuna combines the Seventh Gate, Susanoo clones, and Flying Thunder God to break Tetsuya’s golden Susanoo. Tetsuya remains unharmed and retaliates in Six Paths Sage Mode, leaving both rivals bruised but not seriously injured. Afterward, Izuna condemns Danzo upon learning of his plan to steal Shisui’s Kotoamatsukami 190.

Uchiha Massacre and Resettlement

At the Daimyo’s Mansion in the Land of Grass, Izuna challenges the recovered Shisui to take responsibility for the clan rather than expect past leaders to solve its problems. He dismisses the modern Uchiha as penned sheep but recognizes a trace of their old spirit when Shisui argues back. Shisui subsequently studies under him 194 200.

During the massacre, Izuna confronts the masked attacker later identified as Obito. He awakens the Rinnegan midway through their fight, but the sudden change in his abilities disrupts his control and allows Obito to escape. Despite this, Izuna rescues all the Uchiha serving in the Konoha Military Police Force and sends them to the Daimyo’s Palace in the Land of Grass. He brings Izumi back with him because she wishes to check on the compound 201 205.

Izuna challenges Tobirama’s objection to the survivors’ removal, warning that any attempt to eliminate them would first have to overcome him. He then insists on recovering the dead and every remaining Sharingan, refusing to leave the clan’s eyes for Danzo. Using his new spatial ability, he opens a doorway to the Land of Grass and removes the clanspeople’s remains 201 202.

After the funeral, Izuna asks Tetsuya to help the Uchiha resettle. Tetsuya offers a district in the capital, and Izuna directs the clan to choose a reasonable area. During the same discussion, he learns that Black Zetsu manipulated Madara through the altered stone tablet and might target Izuna’s own Rinnegan. He reacts angrily and vows to stop Zetsu if approached 205.

Madara’s Resurrection and Ōtsutsuki Preparations

Tetsuya tells the elderly Madara that the white-masked impersonator was his resurrected younger brother. Madara initially refuses to believe it, while Tetsuya offers to revive Madara himself in exchange for his service 130.

When Tetsuya is finally ready to resurrect Madara, Izuna arrives almost immediately through a spatial portal and brings a vast quantity of gold taken from the Land of Grass’s Daimyo. Tetsuya spends half of it on the recruitment. The revived brothers embrace joyfully, fulfilling Izuna’s longstanding hope of reunion 279.

Madara’s hostility toward Tobirama returns immediately, but Izuna reassures him that he can now handle their old enemy. He boasts of his Susanoo Flying Thunder God Slash, provoking Tobirama’s complaint that he has merely attached Susanoo to Tobirama’s invention. The two move away to resume their fight while Madara and Tetsuya speak 279 280.

During preparations for Urashiki Ōtsutsuki’s arrival, Tetsuya assigns Izuna to restrain the enemy with Space Manipulation and prevent escape through Yomotsu Hirasaka. Izuna accepts confidently. While watching Madara’s battle with Urashiki, he defends his brother’s superiority and mocks Tobirama’s attempts to analyze Madara’s limits 291 296.

Clan Mentorship and Political Developments

Izuna and Madara observe silently when the Uchiha survivors request permission to pursue Itachi, allowing the clan to decide whether it will rely on its ancestors or seek revenge through its own strength 332.

Although Izuna initially condemns Itachi as a traitor, he listens to Tetsuya’s explanation and reconstructs Itachi’s strategy: destroy the coup movement with the Masked Man, shoulder the blame, preserve Konoha’s reputation, and leave Sasuke alive to grow strong enough to defeat him. Tetsuya confirms the deduction. Understanding this plan does not erase Izuna’s clan-centered objections 334 335.

Izuna accepts Sasuke as the clan’s leader for the new era and teaches him everything he can. While the survivors confront Danzo, Izuna and Madara search for Isshiki; Izuna detects the brief fluctuation indicating that Isshiki secretly helped Danzo escape 363 364.

During later events, Izuna continues serving as Madara’s strategist, immediately recognizing Tetsuya’s reference to God Trees and their fruits as a route to greater power. He also understands Tetsuya’s plan to use the captured daimyo to integrate the conquered nations 420 445.

After returning from the parallel-world mission, Izuna plans to visit the Uchiha and see how Sasuke is managing the clan. Later, Tetsuya explicitly credits him for helping save and support the Uchiha. Izuna presses Sasuke to marry and continue the bloodline, then takes him away to arrange a blind date 480 528.

Parallel-World Rescue

Tetsuya receives a cross-world request from a Madara whose Izuna is dying before Konoha’s founding. Izuna joins Tetsuya, Madara, Hashirama, and Tobirama through the Golden Portal to visit that parallel timeline and the moment corresponding to his own death 468 469.

The visiting Izuna explains the internal injuries caused by Flying Thunder God Slash while Tetsuya uses Six Paths Yang power to stabilize his counterpart. He warns the parallel Madara that full recovery will still take time. His familiar use of the second-in-command’s seat and habitual request for tea convince that Madara that the visitor truly is another version of his brother 469 470.

Tetsuya speculates that Black Zetsu might have contributed to Izuna’s death to ensure Madara gained the Eternal Mangekyō; this remains a suspicion rather than an established cause. The parallel Madara refuses to sacrifice Izuna for power and remains at the compound to care for him while the visiting Madara impersonates him elsewhere 470 471 472.

The visiting Madara’s later claim to the Senju that Izuna has died is part of this impersonation, not a reversal of the successful rescue. The travelers eventually return to their own world 472 480.

Later Cross-World Adventures and Expedition

During a later adventure, Izuna cuts down a group of opponents and dismisses the killing as merely dirtying his blade. He subsequently treats Giyu’s head wound with a green-glowing healing technique, stopping the bleeding and clearing his impaired consciousness 485 491.

He earns the title Mirror Hashira because he can reproduce someone’s swordsmanship perfectly after seeing it once. Izuna is indifferent to the title, while Tetsuya finds it amusing 499.

When Tetsuya arrives through the Space-Time Gate on a barren planet for the Ōtsutsuki-hunting expedition, Izuna is already there with Jigen. He confirms that Madara and Hashirama destroyed the twin planet during their fight. Hashirama then returns while transformed into Izuna 552.

His rivalry with Tobirama continues into later research discussions. When the possibility of a Sharingan-equipped artificial human is raised, Izuna and Madara react suspiciously, wondering whether Tobirama has created a Senju–Uchiha hybrid 564.

Appearance

  • Hair and face: Tetsuya’s Izuna disguise has short, spiky black hair, crimson eyes, and a stern face. Tobirama judges it almost identical to Izuna’s appearance at the time of his death 11 12.
  • Original Mangekyō pattern: A black ring inside each blood-red iris, connected to the outer edge by three column-shaped spokes—one above and two below 48.
  • Eternal Mangekyō pattern: Three hollow tomoe linked head to tail, closely resembling Madara’s Eternal Mangekyō Sharingan. Despite their similarity, the brothers’ patterns have subtle differences 48 280.
  • Bearing after the upgrade: His previously calm, aloof presence becomes markedly colder and more murderous 48.
  • Rinnegan and ordinary eyes: His Eternal Mangekyō evolves into the Rinnegan. He can deactivate it and return his eyes to ordinary black ones 201 202.
  • Resemblance to Sasuke: Shisui notices the resemblance upon meeting him; the adult Sasuke from the future is described as bearing an eighty-percent resemblance to Izuna 194 290.
  • Masked battlefield identity: Wears a white mask while impersonating Madara on the Amegakure battlefield 130 372.
  • Later clothing: Appears dressed in black when intervening near the injured Giyu 491.

Personality

Izuna is proud of his Uchiha heritage, competitive, and demanding of himself. After completing a replica battle five minutes faster than before, he remains dissatisfied because he had planned to improve by fifteen minutes. He confidently defends the effectiveness of Sharingan genjutsu and bristles at Tetsuya’s claims of being a weak merchant 33 35.

His loyalty to Madara dominates his life after resurrection. He initially feels disconnected from the modern Uchiha and refuses to visit Konoha because of his brother’s suffering. His hatred of Tobirama remains intense, although he grudgingly respects Tobirama’s intelligence and ability to invent techniques 30 36 44.

Izuna readily considers killing hostile intruders, but follows Tetsuya’s instructions to capture or manipulate them instead. Their friendship becomes comfortably irreverent: he adopts Tetsuya’s eye-rolling and rude gestures, while still struggling to understand decisions motivated chiefly by entertainment 32 35 42.

His initial estrangement from the modern clan gives way to active responsibility for its survival. He criticizes dependence on old leaders, values defiance and independence, and ultimately protects the Military Police survivors, recovers the dead, and helps secure a new home for the Uchiha 194 201 202 205.

His rivalry can also drive disciplined innovation. Frustration with Flying Thunder God turns his attention toward serious space-time research and eventually shapes his Rinnegan ability 184 189 202.

Despite strong clan loyalties, Izuna can analyze motives that offend him. His reconstruction of Itachi’s plan demonstrates an ability to distinguish strategic understanding from personal approval 335.

He later takes a paternal and forceful interest in Sasuke’s leadership and family life, treating the continuation of the Uchiha bloodline as a responsibility Sasuke must shoulder 290 480 528.

Abilities & Skills

Sharingan and Genjutsu

Izuna uses his Sharingan for observation, control, and intelligence gathering 30 32 33.

  • Detects the concealed religious symbol that exposes Mikiko’s likely origin 30.
  • Subdues two infiltrators through eye contact and offers to extract information directly with his Sharingan 32.
  • Plants lasting suggestions that turn the infiltrators into unsuspecting informants 33.
  • States that ordinary observers will not notice his clan’s genjutsu, though a shinobi well versed in genjutsu may recognize it 33.
  • Controls Kakuzu when he mistakes the newly recruited business partner for a hotel thief 42.

Mangekyō and Eternal Mangekyō Sharingan

Both of Izuna’s original Mangekyō abilities enhance his own strength; their names and exact effects are not supplied 35.

  • His Eternal Mangekyō is obtained through perfectly compatible, system-generated blood-relative eyes 47 48.
  • After the upgrade and Hashirama Cell injection, his maximum ocular power gradually rises rather than merely recovering after use 48.
  • Tetsuya proposes that sufficient growth could eventually produce the Rinnegan. Izuna still has not awakened it in Chapter 184, but achieves the evolution during the massacre 48 184 201.
  • Eternal Divine Kingdom and Mirror Beyond the Clouds belong to Tetsuya, not Izuna; Tetsuya awakens different techniques despite obtaining his Sharingan through Izuna’s recruitment 34 35.
  • At the moment of Rinnegan awakening, Izuna reports that his original Sharingan powers have disappeared and been replaced by unfamiliar new abilities. Later chapters nevertheless continue to associate him with Susanoo-based combat 201 279.

Rinnegan and Space Manipulation

Izuna awakens the Rinnegan during his fight with Obito. The sudden transition initially impairs his effectiveness because he does not yet understand its powerful new abilities 201 205.

  • Space Manipulation: Allows him to split and splice space at will. He initially has not named the ability; it is later referred to as Space Manipulation 202 291.
  • Spatial doorways: Opens passages between locations, including a doorway from Konoha to the Daimyo’s Mansion in the Land of Grass 201 202.
  • Evacuation and transport: Sends all the Uchiha Military Police survivors to the Land of Grass and uses spatial travel to reach Tetsuya rapidly before Madara’s resurrection 201 279.
  • Space-time counter: Specifically counters Flying Thunder God and is described as countering practically all space-time ninjutsu. Its emergence reflects his fixation on overcoming the technique that killed him 202.
  • Escape prevention: Tetsuya assigns him to restrain Urashiki and prevent escape through Yomotsu Hirasaka. This is a planned role, not by itself proof of every possible interaction between the two abilities 291.
  • Later mastery: By the confrontation involving Kaguya, he is described as having mastered his space-time ability. Tetsuya later considers him capable of keeping Obito completely under his control despite Kamui 424 432.
  • Deactivation: Can return his Rinnegan to ordinary black eyes 202.

Susanoo

Izuna manifests an enormous blue Susanoo wielding a massive sword 48.

  • Trades sword strikes with Tetsuya’s golden Susanoo during testing.
  • Their collisions produce shock waves that devastate the surrounding woodland 48.
  • Uses Perfect Susanoo while impersonating Madara and defeats Hanzo; Tetsuya later describes the result as crippling Hanzo with a single slash 61 130 372.
  • Incorporates Susanoo clones into a combined Seventh Gate and Flying Thunder God attack that shatters Tetsuya’s golden Susanoo 190.
  • Calls one of his combined techniques Susanoo Flying Thunder God Slash, adapting Tobirama’s invention rather than claiming to have created the original Flying Thunder God Slash 279.

Ninjutsu, Swordsmanship, and Movement

Izuna is an accomplished swordsman and versatile combatant with a strong capacity for learning 30 35 36.

  • Fire Release: Dragon Flame Song Technique creates four fire dragons that attack from above, below, left, and right 35.
  • Uses the Body Flicker Technique to appear directly before intruders 32.
  • Trains with blades, ninjutsu, and taijutsu against near-identical replicas of himself 35.
  • Learns numerous powerful ninjutsu from Tetsuya after resurrection 36.
  • Flying Thunder God: Demonstrates its use in combined Susanoo combat after researching counters to Tobirama’s space-time techniques 189 190 279.
  • Seventh Gate: Uses the Seventh Gate in his strongest demonstrated combination against Tetsuya’s golden Susanoo 190.
  • Swordsmanship replication: Can reproduce a sword style perfectly after observing it once, earning the Mirror Hashira title. This is distinct from Tetsuya’s ability to create an Izuna duplicate 499.
  • Healing technique: Applies a green-glowing technique to Giyu’s head wound, stopping the bleeding and restoring clarity. The passage does not supply its formal name 491.

Strategy and Battlefield Instinct

Izuna’s tactical experience comes from planning Uchiha campaigns and surviving the Warring States Period 32 49.

  • Recognizes approaching intruders’ hostile intentions through deeply honed danger instincts 32.
  • Deduces that Mikiko intends to use Nakamura to gain control of his family 31.
  • Identifies the Land of Rain’s position as both a wartime battlefield and a peacetime buffer between major nations 45.
  • Assesses alliances, depleted forces, and likely campaign priorities during the Second Shinobi World War 49.
  • Deduces that Nagato’s Rinnegan are Madara’s transplanted eyes despite initially being unfamiliar with the Rinnegan itself 55 56.
  • Reconstructs Itachi’s intended political cover, acceptance of blame, and plan for Sasuke’s eventual victory 335.
  • Detects the fleeting spatial fluctuation associated with Isshiki’s intervention to save Danzo 363.
  • Recognizes the significance of God Trees and their fruits to further advancement and understands Tetsuya’s use of captured daimyo for political integration 420 445.

Teaching and Mentorship

Izuna applies his combat knowledge to training younger shinobi and preserving the clan’s future 64 184 200 364.

  • Tests Nagato, Konan, and Yahiko’s chakra natures and develops basic training plans suited to their abilities 64.
  • Begins their instruction with ninja tools and fundamentals while their chakra reserves are still developing 64.
  • Takes over neglected Ninja Academy duties during Tobirama’s research obsession 184.
  • Teaches Shisui, whose knowledge of Amaterasu is explicitly connected to studying under him 200.
  • Accepts Sasuke as the new era’s Uchiha leader and passes on everything he can teach 364.

Six Paths Power

By the parallel-world rescue mission, Izuna is explicitly recognized as a Six Paths-level fighter 469 470.

  • Attributes his eligibility for this realm to his underlying foundation, while Tobirama emphasizes that Tetsuya helped him obtain the power 470.
  • The supplied material does not establish a distinct named Six Paths transformation for Izuna or specify exactly how he attained this level.
  • The Six Paths Yang healing used to save the alternate Izuna is performed by Tetsuya, not the visiting Izuna 470.

Resurrection-Linked Survival

Tetsuya states that those he resurrects cannot die while he remains alive 44.

  • This protection applies to Izuna.
  • The supplied material does not establish a specific regeneration rate or demonstrate how this protection responds to every kind of injury 44.

Equipment / Weapons / Items

  • Long sword — Used during his training battles and carried in a sheath; he continues using a blade during later cross-world adventures 35 485.
  • Kin-compatible Mangekyō Sharingan — System-produced upgrade material used to obtain his Eternal Mangekyō Sharingan 47 48.
  • Hashirama Cells — Injected by Tetsuya as part of the attempt to develop his eyes toward the Rinnegan 48.
  • White mask — Used for his Madara impersonation on the Amegakure battlefield 130 372.
  • Ninjutsu scrolls — Studies numerous scrolls while developing counters to Flying Thunder God 189.
  • Gold treasury — Brings gold taken from the Land of Grass’s Daimyo to fund Madara’s resurrection; Tobirama objects to its theft 279.
  • Gunbai attribution — The genuine gunbai wielded by the Izuna duplicate belongs to Tetsuya’s system-acquired inventory. That scene does not establish that the original Izuna owns it 305.

Relationships

  • Madara Uchiha — Older brother, former clan leader, and the focus of Izuna’s hope for reunion. Izuna served as his strategist and works to help finance his eventual resurrection. He finally reunites with Madara after providing gold for the recruitment, and their protective family bond remains strong 29 36 49 279 296.
  • Chiba Tetsuya — Resurrector, benefactor, training partner, and friend. Izuna protects his business despite frequently questioning his commercial and entertainment-driven priorities. Tetsuya supports his ocular advancement, the Uchiha’s resettlement, and Madara’s revival, and later credits Izuna for helping preserve the clan 29 35 36 44 48 205 279 528.
  • Tobirama Senju — Longtime rival and killer. Izuna retains a mortal grudge against him but acknowledges his exceptional intellect. Tetsuya conceals having used Izuna’s identity to save him. After Tobirama’s resurrection, the feud continues through arguments, brawls, technique research, and competition over power, though the two repeatedly cooperate within Tetsuya’s circle 21 44 171 184 190 470 564.
  • Kakuzu — Fellow member of Tetsuya’s business operation. Izuna initially captures him as a suspected thief, then accepts him after confirming his recruitment 42.
  • Modern Uchiha Clan — His ancestral clan, from which he initially feels estranged. He considers their shared name insufficient reason to reconnect, but later rescues the Military Police survivors, recovers the clan’s remains and Sharingan, and helps establish their new life in the Land of Grass 30 36 201 202 205.
  • Nagato, Konan, and Yahiko — Students whose early ninja training he oversees. Nagato’s eyes also lead him to deduce that Madara’s Rinnegan have been transplanted 55 56 64.
  • Shisui Uchiha — Younger clansman and student. Izuna challenges his dependence on historical leaders but respects his willingness to argue back. They agree on recovering the clan’s dead and keeping its Sharingan from Danzo. A possible blood relationship is suggested but remains unresolved 194 200 202.
  • Sasuke Uchiha — Younger clansman who closely resembles him, accepted successor to the clan’s leadership, and recipient of his instruction. Izuna later takes an active interest in Sasuke’s management of the Uchiha and insists that he marry to continue its bloodline 290 364 480 528.
  • Izumi Uchiha — Survivor rescued with the Military Police Uchiha. Izuna allows her to accompany him back to check on the compound 201.
  • Itachi Uchiha — Condemned as a traitor for the massacre. Izuna later understands the strategy behind his actions without adopting his village-first outlook 332 335.
  • Obito Uchiha — Opponent during the massacre. Obito escapes when Izuna’s sudden Rinnegan awakening disrupts his control; Izuna’s later spatial mastery makes him a decisive counter to Kamui 201 205 432.
  • Black Zetsu — Enemy whose manipulation of Madara enrages Izuna. Tetsuya warns that Izuna’s Rinnegan could also make him a target, and Izuna vows to oppose him 205.
  • Hashirama Senju — Former enemy and later companion in Tetsuya’s circle. Hashirama mediates Izuna’s quarrel with Tobirama during the parallel-world rescue and later uses his own Rinnegan ability to take Izuna’s appearance 470 552.
  • Alternate Izuna and Madara — Parallel-world counterparts encountered before Konoha’s founding. The visiting Izuna explains his counterpart’s fatal injuries and is welcomed by the parallel Madara as family 469 470.
  • Giyu — Receives treatment from Izuna after sustaining a bleeding head wound during a later adventure 491.

Notable Quotes

“That place put my brother through so much pain. I'm afraid I wouldn't be able to stop myself from destroying it.” 36

“You really are frightening. In a shinobi world war, the ninja of every village pay with their blood and lives, but to you, it's just business.” 44

“I saved all the Uchiha in the Konoha Military Police Force. I used the Rinnegan's power to send them to the Daimyo's Palace in the Land of Grass.” 201

“It's one of my Rinnegan abilities. I haven't thought of a name yet, but it lets me split and splice space however I want.” 202

“Don't worry. I'd like to see which is stronger: his Yomotsu Hirasaka or my Space Manipulation.” 291


Appearances

1,463
Total Mentions
236
Chapters Appeared
6.2
Avg. per Chapter