Izuna

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 29 36 42.
Occupation/Role	Former Uchiha second-in-command and Madara’s strategist; later hotel protector and business assistant 29 36 49.
Family	Younger brother of Madara Uchiha; states that neither brother left descendants 21 45.
Status	Resurrected by Tetsuya; according to Tetsuya, cannot die while Tetsuya remains alive 29 44.
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 remains a possibility, not an achieved stage.

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.

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.

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.

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 48.
• Bearing after the upgrade: His previously calm, aloof presence becomes markedly colder and more murderous 48.

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 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.

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 has not awakened it in the supplied chapters 48.
• 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.

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.

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.

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.

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 35.
• 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.

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 29 36 49.
• Chiba Tetsuya — Resurrector, benefactor, training partner, and friend. Izuna protects his business despite frequently questioning his commercial and entertainment-driven priorities 29 35 36 44.
• 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 21 44.
• 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 feels estranged. He considers their shared name insufficient reason to reconnect 30 36.

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