Itachi

Biodata

Feature	Value
Name	Itachi Uchiha (鼬)
Species/Race	Uchiha Clan
Gender	Male
Affiliation	Uchiha Clan; formerly ANBU; Akatsuki (undercover for Konoha) 53 64 102 109 116
Occupation/Role	Former ANBU operative; covert informant against Konoha's higher-ups; undercover Akatsuki operative; Sasuke's mentor 64 87 102 109
Status	Alive; undercover in Akatsuki. His health improved under Tsunade's treatment, but Mangekyō overuse remains a risk 102 116
First Appearance	Chapter 25

Background / History

Itachi attended the Uchiha Clan assembly as tensions with Konoha escalated. Initially caught between the village and his clan, he became deeply shaken when Root surveillance records named Sasuke among potential targets. Uchiha You's warnings that Danzo would eventually use Sasuke against him began to undermine his faith in Konoha's leadership 25 27 28.

After Danzo attempted to steal Shisui's Mangekyō Sharingan, Shisui confirmed that Uchiha You's predictions had been accurate. Itachi was forced to confront the possibility that the village's leaders were willing to sacrifice the Uchiha—and manipulate Sasuke—to preserve their power 37 38.

Itachi agreed to remain in the ANBU while secretly serving the clan's counterplan. He publicly denounced Uchiha You's preparations, creating a convincing ideological split that reassured Hiruzen and Danzo that he remained loyal to Konoha 39 40. He subsequently supplied Danzo with deliberately curated intelligence about Uchiha You's apparent ocular-power depletion and the clan's supposed lack of readiness 45 46 48. He also supplied ANBU shift-change information that helped Akatsuki enter the clan grounds for the counterattack 49.

During Root's assault on the Uchiha Clan Grounds, Itachi openly turned on Danzo. He revealed that his loyalty lay with Sasuke and the clan rather than the man who had tried to use his brother as leverage, then fought alongside the Uchiha counterattack 52 53.

Following the defeat of Root, Uchiha You ordered Itachi to return to the ANBU and expose the truth of the night's events, weakening Hiruzen's influence within the organization 64. He later accompanied Uchiha You and Shisui in searching for Tsunade and Jiraiya and underwent Tsunade's medical examination 69 78. Treatment improved his complexion and stabilized his chakra flow, though it did not immediately erase the damage caused by overexertion 84 102.

As Akatsuki grew more dangerous, Uchiha You assigned Itachi a long-term infiltration mission. Itachi accepted, stating that, with the clan preserved and Konoha changing, he wanted to serve the village without turning against his family. He departed under the public guise of a rogue ninja dissatisfied with Konoha's new order; only Tsunade, Uchiha You, Fugaku, and Shisui knew the mission's true purpose 102 109. Pain accepted him into Akatsuki, where Kisame became his partner and Orochimaru took an interest in possessing his body and Sharingan 109.

Over the following five years, Itachi maintained his cover while secretly passing intelligence to Konoha. He defeated Orochimaru's attempt to seize his body with Mangekyō genjutsu, prompting Orochimaru to flee Akatsuki. He also reported information about the newly recruited Hidan through a summoned crow while Kisame, aware of the communication, chose not to expose him 116.

Personality

Itachi is restrained, analytical, and highly self-sacrificing. His instinct is to endure burdens alone if doing so might protect Sasuke, the clan, or the village; this tendency leaves him vulnerable to Danzo's manipulation 38 42.

Despite his reserved demeanor, Sasuke is his clearest emotional weakness. The prospect of Sasuke being threatened, controlled, or left alone after a clan massacre ultimately drives Itachi to reject Danzo and side fully with the Uchiha Clan 27 38 52.

After joining Uchiha You's plan, Itachi proves capable of deception and long-term infiltration. He accepts the hostility of his clansmen and the risk of being viewed as a traitor in order to maintain Danzo's confidence until the decisive moment 40 42 53. He later accepts a false rogue-ninja identity to protect Konoha from within Akatsuki, prioritizing a sustainable cover and survival over immediate intelligence gains 102 109 116.

Abilities & Skills

Sharingan and Mangekyō Sharingan

Itachi possesses the Sharingan and can activate a windmill-pattern Mangekyō Sharingan for advanced genjutsu 84.

• Uses the Sharingan to coordinate precise ninja-tool attacks and assess trajectories 87.
• His Mangekyō use contributes to deteriorating eyesight, mental exhaustion, and severe physical strain 78.
• Tsunade warns that continued high-intensity combat without treatment could shorten his life 78.
• Tsunade identifies Tsukuyomi as a particularly taxing Mangekyō technique and advises him to reserve Mangekyō use for necessity and end such fights quickly 102.

Genjutsu

Itachi can employ Mangekyō Sharingan genjutsu potent enough to be selected for Uchiha You's attempt to treat Tsunade's trauma 84.

• His genjutsu is considered beyond ordinary illusion techniques 84.
• His ocular techniques must be used sparingly due to his medical condition 78 102.
• He defeats Orochimaru's attempt to seize his body with Mangekyō genjutsu, leaving Orochimaru's hands pinned by kunai and forcing him to flee Akatsuki 116.
• His Sharingan genjutsu repeatedly defeats Deidara, who trains his left eye to resist it 116.

Ninja Tool Throwing

Itachi is an exceptional ninja-tool specialist and personally instructs Sasuke in advanced throwing methods 87.

• Alters trajectories through midair collisions between shuriken.
• Uses rebounds from environmental surfaces to strike targets from unexpected angles.
• Emphasizes imagination, angle calculation, unpredictability, and coordination with the Sharingan 87.

Combat Skill

Itachi is a capable close-quarters combatant and ANBU-trained operative.

• Slays two Root ninja at the opening of the Uchiha counterattack 53.
• Coordinates with Shisui and Fugaku against Hiruzen Sarutobi, though Hiruzen temporarily suppresses them with multi-element ninjutsu and the Golden Cudgel 56.
• Uses an ANBU short sword during his confrontation with Danzo 52.

Espionage and Communication

Itachi has carried out successive covert assignments against Danzo and within Akatsuki, using credible cover identities and selective intelligence to conceal his allegiance 39 45 52 102 109 116.

• Mixes genuine and false information in reports to Danzo; his account of Uchiha You's Mangekyō side effects helps lure Danzo into attacking 39 45 46 52.
• Is instructed to conceal his full strength, avoid conspicuous investigation of Akatsuki's Tailed Beast plan, and build Tobi and Zetsu's belief that they can use him 102 109.
• Uses a summoned crow to transmit important intelligence and a separate method for routine reports; he later sends Konoha information about Hidan through the crow 109 116.

Power Progression

Stage	Development	Chapter
ANBU operative	His position gives him access to Konoha's internal intelligence and patrol arrangements, which he later uses for the Uchiha counterplan.	39 49
Mangekyō Sharingan demonstrated	Reveals a windmill-pattern Mangekyō Sharingan when called upon for advanced genjutsu; its use is constrained by his health.	78 84
Medical recovery	Tsunade's treatment improves his complexion and stabilizes his chakra flow, allowing him to undertake a long-term mission with restrictions on Mangekyō use and intense combat.	84 102
Akatsuki infiltration	Takes up an undercover role among Akatsuki's powerful members, relying on deception and restraint as well as combat ability.	102 109
Defeat of Orochimaru	Uses Mangekyō genjutsu to stop Orochimaru's attempt to possess him, leading to Orochimaru's defection from Akatsuki.	116

Equipment / Weapons / Items

• ANBU uniform — used to preserve his cover as a village-loyal operative during the Uchiha counterplan 50 52.
• Short sword — drawn when he declares his choice to stand against Danzo 52.
• Ninja-tool pouch and shuriken — used for precision throwing demonstrations and training 87.
• Medical supplies — Tsunade provides six months of medicine, to be taken once every seven days, along with hemostatic medicine, antidotes, and soldier pills for his undercover mission 102.
• Summoned crow — given to him by Uchiha You for secure intelligence transmission and contact with Kisame 109 116.

Relationships

• Uchiha You — Initially challenges Itachi's faith in Konoha; later becomes his covert ally and strategist. Itachi follows You's plan to mislead Danzo, defects during Root's attack, and is entrusted with returning to the ANBU afterward 38 39 52 64. You subsequently arranges his treatment and directs his Akatsuki infiltration, emphasizing caution and survival 78 102 109.
• Sasuke Uchiha — Younger brother and Itachi's greatest concern. Danzo's threats against Sasuke are the decisive factor in Itachi's break with Konoha's higher-ups; Itachi later mentors him in ninja-tool techniques 37 42 87.
• Shisui Uchiha — Close friend and trusted confidant. Shisui's near-loss of his eye helps convince Itachi that Danzo cannot be trusted; they later fight together to protect the clan 37 39 53. They exchange familiar teasing before Itachi leaves for Akatsuki 109.
• Fugaku Uchiha — Father and Uchiha Clan head. Fugaku's confidence in Itachi improves after Itachi's public defection from ANBU and defense of the clan 42 69. He knows the truth of Itachi's Akatsuki mission and urges him not to push himself too hard 109.
• Danzo Shimura — Former handler and primary antagonist. Danzo attempts to control Itachi by threatening Sasuke, but Itachi ultimately turns Danzo's own plan against him 42 52 53.
• Hiruzen Sarutobi — A village authority figure who initially regards Itachi as a potential means of controlling the Uchiha Clan; Itachi's staged loyalty helps preserve that misconception 37 40 41.
• Tsunade — Treats Itachi's serious health condition and orders him to avoid excessive Sharingan use 78. Before his Akatsuki mission, she assesses his recovery, supplies medication, and asks him to send medical updates if he cannot return for an examination 102.
• Mikoto Uchiha — Mother who worries for both Itachi and Sasuke amid the conflict surrounding the clan 37.
• Kisame Hoshigaki — Escorts Itachi to Akatsuki, where they form a partnership initially marked by mutual appraisal and challenge. Kisame becomes aware that Itachi secretly communicates with Konoha but does not expose him 109 116.
• Orochimaru — Covets Itachi's Sharingan and body as a vessel. Itachi defeats his possession attempt with Mangekyō genjutsu, after which Orochimaru defects from Akatsuki 109 116.
• Deidara — Frustrated by how quickly Itachi's Sharingan genjutsu defeats him; their rivalry motivates Deidara to train his left eye against such techniques 116.

Story Role / Major Arcs

Uchiha Clan Crisis

Itachi observes the clan's growing fury, learns that Sasuke has been placed under Root surveillance, and begins questioning whether Konoha's leadership can be trusted 25 27 28.

Covert Infiltration of Konoha's Higher-Ups

He remains in the ANBU as a double agent, stages a public dispute with Uchiha You, and feeds Danzo false intelligence designed to lure Root into attacking under unfavorable conditions 39 40 45 48.

Uchiha Massacre Night Counterattack

Itachi reveals his true allegiance during Root's invasion, rejects Danzo's coercion, and fights beside the Uchiha Clan and Akatsuki-backed forces 52 53.

Post-Root Reconstruction

After the Uchiha victory, Itachi is sent back into the ANBU to spread the truth about the operation and destabilize Hiruzen's control over its members 64.

Medical Treatment and Sasuke's Training

Tsunade identifies his severe health problems and begins treatment. Later, Itachi mentors Sasuke in advanced shuriken techniques, stressing creativity and unpredictability rather than merely accurate throws 78 87. His improved condition eventually permits a long-term mission, provided he limits Mangekyō use, takes medication, and avoids consecutive high-intensity battles 102.

Akatsuki Infiltration

Itachi leaves Konoha posing as a rogue ninja opposed to its new political order. His assignment is to monitor Tobi and Zetsu, report Akatsuki recruitment plans, and preserve his cover rather than pursue intelligence recklessly. Pain knows the truth of his mission, while Kisame is a potential ally 102 109. Over five years in Akatsuki, Itachi defeats Orochimaru's attempt to possess him and continues sending intelligence to Konoha, including a report on Hidan 116.

Trivia

• Itachi's covert conversion is tracked by Uchiha You's system; it reaches 65% when he accepts the infiltration plan and 75% after Danzo threatens Sasuke 40 42.
• He considers himself physically capable of continuing despite Tsunade's diagnosis, reflecting his habitual tendency to endure pain rather than seek help 78.
• After overhearing Uchiha You and Tsunade quarrel, Itachi privately considers his dangerous Akatsuki assignment preferable to remaining near their argument 102.