Izuna

Biodata

Power Progression

Background

Before transmigrating, Izuna was a college student who enjoyed anime, cosplay, and writing parallel-world stories. At the time of his death, he was cosplaying a version of Uchiha Izuna from a setting he had created 1.

He arrived in Konoha roughly half a year after its Uchiha Izuna had died from a wound inflicted by Tobirama Senju. The newcomer knew little about the original Izuna and concealed that he was a cosplayer inhabiting his body. Madara initially suspected a visitor from another world but welcomed him back 1 2 25.

Izuna’s invented setting gave him an explanation for his familiarity with the Senju: in it, Izuna and Tobirama had joined Madara and Hashirama’s childhood friendship, and the four had helped bring their clans together. He later presented a version of this story to Madara and Hashirama as his past 1 94.

After realizing Madara might pursue the Infinite Tsukuyomi, Izuna resolved to learn clan affairs, gain influence, and prevent Black Zetsu from guiding him toward that future 9 10.

Appearance

Izuna has a handsome, youthful appearance with delicate Uchiha features and black hair. His clear black eyes are often described as full of laughter 11 107 125.

• He wears a black, high-collared robe bearing the Uchiha crest on its back 10.
• His removable artificial left eye can fall out; he was able to see through it after Madara reinstalled it 2 189.
• His Tengu awakening gave him black wings, which he initially had difficulty controlling 231.

Personality

Izuna considers himself a guileless, somewhat socially anxious student rather than the composed and ruthless second-in-command he imagined. Early on, he improvises explanations for his unfamiliar behavior and avoids introducing himself in detail because he knows so little about Uchiha Izuna 16 22 25.

He is generally friendly and inclusive, patiently teaching children and making connections across Konoha’s clans. He can also be calculating: he deliberately encouraged opposition to his biwa performance to lower expectations before it took place 31 32.

Despite his initial wish to avoid trouble, Izuna chooses to take responsibility for protecting Madara and changing Konoha’s future. His concern for Madara becomes personal, and he decides to treat him as family even though he knows he is not this world’s original Izuna 9 121.

Abilities & Skills

Rhythm Game Assist System

The system presents combat as visual note tracks and timing windows, helping Izuna read attacks and respond with precision 12 13.

• Displays attack intentions, trajectories, rhythms, and chakra fluctuations, with a 360-degree field of vision 13.
• Lets him interpret weapons, ninjutsu, and openings as different kinds of notes; he used an iron shovel to defeat groups of Uchiha challengers 12 13.
• Does not remove physical limits: against coordinated elite Uchiha, he briefly struggled to make his body keep up with what he could perceive 12.

Swordsmanship and Taijutsu

Izuna combines high-speed, rhythmic sword attacks with precise hand-to-hand counters. His sword practice includes rapid combinations and repeated strikes from multiple angles 7 8.

• Defeated five elite Hyuga fighters by countering their formation and scattering their Gentle Fist chakra 117.
• Outmaneuvered Chekku’s speed and Lightning Release in the Arena Challenge 201.
• Drew blood from Ōtsutsuki Isshiki with a bare-handed attack and later fractured his arm with a chakra-enhanced punch 207 208.

Senju-Style Monster Strength

Izuna’s body possesses the immense strength included in his imagined version of the character. He initially had difficulty controlling it and accidentally punched Madara through several trees 5 6.

Sharingan and Mangekyō Abilities

Izuna’s Sharingan appeared during his confrontation with Black Zetsu, although he later told Hashirama that he could not activate it at will 88 132.

• Kamui: His left-eye ability manipulates space. He used spatial power to grind Isshiki’s black rods into fragments; doing so left his eye bleeding 209 284.
• Bishamonten: His right-eye ability temporarily restores his body to the soul’s original form, returning missing parts and undoing injuries. Izuna said he could use it as long as he had chakra 284.

Sage Mode

Sage Mode produces colored markings around Izuna’s eyes and grants heightened natural perception. He used that perception to follow traces of Black Zetsu’s chakra, although he could not keep pace with its escape 88 89.

Fire and Wind Release

Izuna developed a guided Great Fireball by linking it to a shuriken with chakra wire. He then used Wind Release to accelerate it over a long distance and instructed suitable Uchiha clan members to practice the technique 46.

System Map

Izuna can use a map to locate people and observe activity. Its detection range does not extend beyond the Land of Fire 46 201.

Shikigami and Yin-Yang Jutsu

Izuna summoned the shikigami Mokushō, who later proposed that Hideki learn Yin-Yang Jutsu alongside him. Mokushō also taught Izuna to enter a captured Tsuchigumo member’s mental world 231 241 331.

Performance and Diplomacy

Izuna plays the biwa, sings, and organizes performances. After a stage play, he redirected the audience’s gifts and enthusiasm toward paid visits and commissions in Konoha; he later performed manzai with a clone disguised as Tobirama 22 84 314.

Equipment and Items

• Artificial left eye — A removable eye whose condition has repeatedly alarmed Madara and other witnesses 2 4 189.
• Uchigatana — Used during his high-speed sword practice 8.
• Iron shovel — Used to defeat Uchiha challengers at the clan training ground; it was badly damaged in the fight 12 13.
• Biwa — Played during his street performance and used for his planned appearance before the Land of Fire daimyo 22 31.
• Crow netsuke — Caused a blank lapse and an intense attachment; Izuna cried when Madara took it from him 173.
• Fan — Mokushō concealed himself inside it before emerging to answer questions 284.

Relationships

• Madara Uchiha — The elder brother of this world’s deceased Izuna. Although Madara recognizes differences in the returned Izuna, he grows deeply protective of him; Izuna chooses to treat him as family 2 9 121 231.
• Hashirama Senju — Initially suspicious of Izuna’s friendly manner, Hashirama becomes fond of him and admires the changes he brings to Konoha 1 38.
• Tobirama Senju — The original Izuna’s killer and an early skeptic of the returnee. The two later work together, though Tobirama continues to question Izuna’s powers and history 1 284 308.
• Mokushō — Izuna’s summoned shikigami, who explains his Tengu awakening and helps him investigate the Tsuchigumo Clan 231 331.
• Uchiha Hikaku — A clan administrator Izuna seeks out to learn how Uchiha affairs are handled 10 11.
• Uchiha Takuma — A young clansman who initially suspects Izuna is an impostor and challenges him, but later warns Madara when the crow netsuke affects him 25 173.
• Wakako — Works with Izuna to arrange Ren and Hinata’s engagement and seek the abolition of the Caged Bird Seal 189 257.

Story Role and Major Arcs

• Return to Konoha: Izuna struggles to maintain his identity while Madara, Hashirama, and Tobirama assess his sudden return. He begins learning clan affairs after deciding to intervene in Madara’s future 1 2 9 10.
• Performances in the Land of Fire: Izuna plans a controversial biwa appearance and helps turn a stage play’s popularity into support for Konoha 31 84.
• Black Zetsu confrontation: His Mangekyō Sharingan and Sage Mode emerge when he sees Black Zetsu. He pursues it in a rage and collapses after exhausting his chakra and mental strength 88 89.
• Hyuga reform: Izuna challenges Hyuga combat traditions and defeats five elite fighters. He later helps secure Tennin’s cooperation on the Caged Bird Seal and settles terms for Hinata and Ren’s engagement 103 117 257.
• Arena and Isshiki: After winning opening Arena Challenge matches, Izuna recognizes Isshiki, wounds him, and fights alongside Madara and Hashirama. He is eventually knocked unconscious during the battle 201 207 208 212.
• Aftermath and investigation: Izuna organizes a memorial service, reveals his Tengu wings and Mokushō, and investigates the Tsuchigumo Clan’s plans. He later proposes a Military Court to try the festival’s perpetrators 231 241 331 352.