Sharingan

Biodata

Feature	Value
Name	Sharingan
Original Name	写轮眼
Classification	Dōjutsu Kekkei Genkai; manifestation of Yin Release Chakra 285
Primary Affiliation	Uchiha Clan
Known Forms	Insight Eye, Hypnosis Eye, Copy Eye, Mangekyō Sharingan, Eternal Mangekyō Sharingan
First Appearance	First discussed in the provided material in 2

Power Progression

Stage / Realm / Level	Chapter	Notes
Awakened Sharingan — Kitahara Kaede	7	Awakens while protecting Hyuga Keiko from an Elite Chunin-level Rogue Ninja; his dynamic vision sharpens enough to track minute movements and predict attacks.
One-Tomoe Sharingan — Uchiha Sasuke	39	Sasuke's hidden one-tomoe eye awakens amid the emotional shock of learning that Danzō possesses transplanted Uchiha eyes.
Two-Tomoe Sharingan / Hypnosis Eye — Kaede	35	Evolves under pressure while his teammates are endangered; grants instinctive genjutsu capable of disrupting an opponent's movements.
Three-Tomoe Sharingan / Copy Eye — Kaede	60	Evolves following Kaede's Uzumaki Sage Body fusion, enabling rapid copying and study of ninja techniques.
Mangekyō Sharingan — Sasuke	52 53	Sasuke's ocular power rises dramatically; he manifests a partial Susanoo during his battle with Danzō.
Eternal Mangekyō Sharingan	211	A higher Mangekyō state said to be obtained through transplantation of a close clansman's Mangekyō eyes, restoring enduring ocular light and producing a new dōjutsu.
Rinnegan	285	Revealed as an evolutionary successor to the Sharingan, itself descended from the Byakugan.

Background

The Sharingan is the Uchiha Clan's hereditary dōjutsu. It is distinct from merely possessing Uchiha blood: Kitahara Kaede first received a “standard Uchiha Clan bloodline,” then later awakened the Sharingan itself. The bloodline fusion increased his Chakra reserves more than tenfold before the eye awakened. 2

An outsider may possess a transplanted Sharingan, as Hatake Kakashi does, but cannot awaken one independently without Uchiha blood. Non-Uchiha users also cannot normally deactivate the eye, creating a continual Chakra burden. 2 9

Kitahara Kaede awakened his Sharingan after witnessing Hyuga Keiko in immediate danger. Its activation substantially improved his eyesight, combat prediction, and Chakra growth; shortly afterward, his Chakra increased by roughly another thirty percent. 7 8

Later revelations identify the Sharingan as an evolved form of the Byakugan and place the Rinnegan as a further evolution beyond it. 285

Appearance

When activated, the Sharingan manifests as blood-red eyes marked by tomoe. Its pattern and ocular power change with advancement.

• Base appearance — Blood-red irises with tomoe markings. 161
• Two-Tomoe form — Associated with the Hypnosis Eye and combat genjutsu. 35
• Three-Tomoe form — Associated with the Copy Eye. 60
• Mangekyō form — Possesses distinctive user-specific patterns; Sasuke's appears as a six-pointed star pattern. 52
• Pattern changes — Sasuke's Mangekyō later displays a visibly altered pattern, suggesting a further change in ocular state. 157

Abilities & Skills

Insight Eye

The Sharingan heightens visual processing and combat perception, allowing its user to read movement before it fully develops.

• Kaede could track a distant mosquito immediately upon awakening and perceive enemy movements as though they had slowed. 7
• In close combat, Kaede read the Monkey Mask Ninja's intentions from minor physical cues, compensating for inferior taijutsu training. 35
• The One-Tomoe Insight Eye can multiply perception severalfold, helping a user react quickly enough to employ techniques such as Flying Thunder God. 122
• Ocular power differs between users: Sasuke's Three-Tomoe Sharingan could see the Nine-Tails within Naruto, while Kakashi's could not. 64

Hypnosis Eye and Genjutsu

The Two-Tomoe Sharingan grants access to eye-based illusion techniques capable of interrupting, deceiving, or controlling opponents.

• Kaede instinctively cast a brief genjutsu after evolving to Two-Tomoe, delaying the Monkey Mask Ninja long enough for a lethal shuriken strike. 35
• Against the weaker Eagle Mask Ninja, Kaede's gaze placed the target under genjutsu long enough to kill him before he could react. 35
• Kaede later subdued multiple Rogue Ninja without hand seals; they had been unconsciously influenced to overlook his activated Sharingan. 161
• The Sharingan can automatically negate low-level genjutsu while active. 69
• High-level users may conduct entire exchanges within genjutsu, causing apparent attacks and movements to be illusory. 210

Copy Eye

The Three-Tomoe Sharingan can observe and reproduce techniques with exceptional speed.

• Kaede copied Fire Style: Phoenix Sage Fire Technique after observing a Chunin. 60
• He later copied Hatake Kenjutsu and developed his own Chidori form after sparring with Kakashi. 103
• The Sharingan's precision allows Uchiha-style shuriken techniques that track and predict multiple projectile trajectories. 86 212
• Kaede observed and copied Hyuga Gentle Fist movements, though the technique's core is tied to the Byakugan. 90

Mangekyō Sharingan

The Mangekyō grants immense ocular power and unique dōjutsu that differ by user.

• Tsukuyomi — Itachi's genjutsu; even a Sharingan user can only resist it to a degree, and the illusion cannot be broken by an ordinary Sharingan user. 15
• Amaterasu — Used by both Itachi and Sasuke; black flames can be cast through the Mangekyō. 48 208
• Kagutsuchi — Sasuke's ability to manipulate the form of Amaterasu. 95 208
• Kotoamatsukami — Shisui's powerful Mangekyō genjutsu, later stolen by Danzō. 95 133
• Kamui — Obito's space-time dōjutsu, allowing intangibility and the transportation of targets into another space. 49
• Susanoo — A massive armored manifestation powerful enough that ordinary attacks and ninjutsu are largely ineffective against it. 53 216

Izanagi

Izanagi is a forbidden Uchiha technique fueled by Sharingan.

• It can alter reality, reverse death, and allow its user to return from fatal attacks. 56
• Each activation permanently closes one Sharingan. 54 56
• A single eye can sustain the technique for roughly sixty seconds. 57
• Danzō used the numerous Sharingan transplanted into his arm as expendable lives for repeated Izanagi activations. 52 57

Eternal Mangekyō Sharingan

The Eternal Mangekyō Sharingan is presented as the solution to Mangekyō blindness.

• Repeated Mangekyō use damages eyesight and ultimately leads to darkness. 210 211
• It is said to be attained by transplanting a close clansman's Mangekyō eyes. 211
• The resulting eyes regain lasting light and develop a new, unique dōjutsu. 211

Limitations

• A transplanted Sharingan cannot normally be deactivated by a non-Uchiha user, continuously draining Chakra. 2 9
• Enhanced vision does not inherently grant the physical speed needed to act on what the user sees. 8
• Genjutsu effectiveness depends on the disparity in power between user and target; Kaede could only stall a Jonin-comparable opponent for an instant. 35
• Mangekyō usage rapidly harms the user's eyesight and may contribute to severe bodily decline. 45 174 210
• Izanagi permanently blinds the Sharingan consumed for its activation. 56 57

Known Users and Holders

• Kitahara Kaede — Received a standard Uchiha bloodline, awakened the Sharingan, and advanced from its initial state to Two-Tomoe and Three-Tomoe forms in rapid succession. 2 7 35 60
• Uchiha Sasuke — Awakened a One-Tomoe Sharingan, later attained the Mangekyō Sharingan and demonstrated Amaterasu, Kagutsuchi, and Susanoo. 39 52 53 95
• Uchiha Itachi — Mangekyō user whose known techniques include Tsukuyomi, Amaterasu, and Susanoo. 15 208 216
• Hatake Kakashi — Non-Uchiha recipient of Obito's Sharingan; his eye is later identified as a Mangekyō Sharingan. 9 196 264
• Uchiha Obito — Mangekyō user associated with Kamui's intangibility and space-time transportation. 49
• Uchiha Shisui — Mangekyō user of Kotoamatsukami; one of his eyes was stolen by Danzō. 95 133
• Shimura Danzō — Possessed multiple transplanted Sharingan in his right arm and used them to sustain Izanagi. 52 57