Mangekyo

Biodata

Feature	Details
Name	Mangekyo Sharingan (万花筒, Mangekyo)
Alias(es)	Mangekyo; Mangekyo-like eyes
Classification	Advanced Sharingan ocular power
Status	Extant; naturally awakened and artificially cultivated examples exist
First Appearance	Chapter 6

Power Progression

Stage / Realm / Level	Chapter	Notes
Mangekyo-like ocular manifestation	6, 8	Uchiha Yansheng displays white pupils, crimson eyes, and pale-blue halos alongside overwhelming ocular chakra. He insists that this abnormal state is neither a normal Mangekyo Sharingan nor a bloodline mutation.
Awakening mechanism identified	35	Yansheng determines that extreme emotion causes the brain to generate a special chakra, which alters the optic nerves and forms the Mangekyo Sharingan.
Artificially induced awakening	36	Itachi awakens the Mangekyo Sharingan after an Emotional Potion, Kotoamatsukami, and an altered Izanami subject him to more than ten subjective years of traumatic experiences.
Cultivated Mangekyo specimens	46	The Little Ten-Tails’ evolutionary chakra allows Yansheng to create two Mangekyo Sharingan from cloned ocular material, based on Kamui and Kotoamatsukami.

Nature and Awakening

The Mangekyo Sharingan is not awakened through ordinary talent, hormones, or a simple increase in ocular power. Yansheng’s experiments conclude that extreme emotion produces a unique chakra in the brain; this chakra then affects the optic nerves and transforms the Sharingan. 35

Uchiha records describe generations of attempts to force the awakening through genjutsu, dissection, emotional manipulation, and engineered tragedies. These practices also led to the development and misuse of Izanagi and Izanami, nearly destroying the clan. 29

Yansheng argues that emotional attachment—not ambition for power—is the key aptitude. In his view, Uchiha who deeply value others are more likely to awaken the Mangekyo, while those obsessed with obtaining it may never do so. 35

Known Users and Specimens

User / Specimen	Known traits	Notes
Shisui Uchiha	Kotoamatsukami in both eyes	His right eye can rapidly hypnotize a target; his left eye has a cooldown of years or longer. 7
Fugaku Uchiha	Mangekyo Sharingan; limited future sight	Fugaku manifests his Mangekyo during his confrontation with Yansheng. His ocular ability is stated to resemble Yansheng’s claimed future sight, but on a much narrower scale. 8 9
Itachi Uchiha	Artificially awakened Mangekyo Sharingan	His awakening is induced through an experiment, but the altered Izanami leaves him trapped for more than two years before Yansheng releases him. 36 50
Kakashi Hatake	Kamui Mangekyo Sharingan	His transplanted eye can distort space, but its chakra burden and incomplete control prevent him from sustaining Kamui against Planetary Devastation. 20
Uchiha Yansheng	Mangekyo-like abnormal ocular state	His eyes contain vast Byakugan-derived ocular power and are explicitly distinguished from a normal Mangekyo Sharingan. 6 8 25
Cultivated specimens	Kamui- and Kotoamatsukami-based Mangekyo	Created from cloned ocular material through the Little Ten-Tails’ evolutionary chakra. 46

Abilities & Skills

Kotoamatsukami

Shisui’s Mangekyo ability is a covert genjutsu capable of influencing a target’s mind without obvious signs of manipulation.

• Shisui’s right eye can apply a brief-period hypnosis with a comparatively short cooldown. 7
• His left eye’s version has a cooldown measured in years, potentially more than a decade. 7
• Kotoamatsukami fails against Yansheng when used on his abnormal ocular-chakra-filled body. 7
• Black Zetsu later uses Shisui’s eye to control Kushina, demonstrating the technique’s danger even against a jinchūriki. 31

Kamui

Kamui is the spatial Mangekyo ability associated with Kakashi’s transplanted Sharingan.

• It can create spatial distortion around a target. 20
• Kakashi’s incomplete control, single transplanted eye, and lack of Uchiha bloodline leave the technique too weak to destroy Planetary Devastation. 20
• Yansheng considers cultivating a Kamui Mangekyo Sharingan a major research objective. 21
• One of Yansheng’s later artificial Mangekyo specimens is based on Kamui. 46

Susanoo

Susanoo is a chakra construct formed through immense ocular power.

• Normal Mangekyo ocular power is generally required to manifest Susanoo, and prolonged use exhausts the eyes. 40
• Yansheng can produce an artificial Susanoo without activating a Mangekyo by drawing on the ocular power of 100,000 sealed Byakugan. 40
• His true body manifests a winged, four-armed Perfect Susanoo armed with four massive chakra blades. 40
• A Shadow Clone can sustain only a lower-stage Susanoo because it carries insufficient ocular power. 40
• Yansheng’s imitation is vulnerable to the Preta Path because it is fundamentally a shell of ocular chakra rather than a genuine Mangekyo Susanoo. 43

Izanagi and Izanami

Izanagi and Izanami are forbidden Uchiha ocular techniques closely tied to the clan’s historical attempts to pursue Mangekyo-level power.

• Izanagi rewrites an accepted outcome of reality after activation, but cannot alter events that occurred before it was used. 46
• Yansheng uses a Three-Tomoe Sharingan embedded in replicated Hashirama Cells to activate Izanagi and reverse Kushina’s fatal defeat. 32 33
• Izanami traps a target in a looping, reality-like illusion; its release condition can be altered by the caster. 35
• Yansheng modifies Izanami during Itachi’s awakening experiment, unintentionally trapping Itachi in repeated visions of massacring his family for more than two years. 35 50

Limitations

• Historical Mangekyo users typically exhaust their ocular power, leaving no preserved Mangekyo Sharingan for later generations. 29
• Artificially recreating the physical eye is insufficient on its own; Yansheng’s early clones reach only the One-Tomoe stage before withering. 35
• Simulated trauma through ordinary genjutsu does not reliably produce an awakening; Yansheng requires layered genjutsu, drugs, and Izanami to awaken Itachi’s eyes. 35 36
• Yansheng’s abnormal Byakugan-derived ocular state grants immense power, but prolonged x-ray vision causes severe visual exhaustion and strains his original Sharingan. 33
• The artificial Mangekyo specimens created through the Little Ten-Tails are not confirmed to have been implanted into a living user or to possess the endurance of naturally awakened eyes. 46 48

History

Yansheng’s abnormal eyes first draw attention when he confronts Shisui over Kotoamatsukami. Their pale-blue and crimson appearance leads the Uchiha to speculate that he has awakened a Mangekyo Sharingan, though Yansheng denies that classification. 6 7

The appearance of a Mangekyo-like power in a ten-year-old destabilizes the clan’s politics. Fugaku sees Yansheng as both a potential asset and an uncontrollable threat, while Shisui’s failed use of Kotoamatsukami confirms that Yansheng’s ocular power does not behave like a conventional Mangekyo. 7 8

After Shisui disappears, Fugaku orders the Uchiha to train in Izanagi under severe restrictions. At the same time, Yansheng begins cultivating Mangekyo tissue, researching the relationship between emotions, chakra, the soul, and ocular evolution. 21 29

Yansheng’s experiment on Itachi provides the first successful artificial Mangekyo awakening. Although the experiment reveals the chakra-based mechanism behind the transformation, it also causes devastating psychological harm through the modified Izanami. 35 36 50

Yansheng later fails to awaken his own Mangekyo through drugs, implanted chakra, and extreme anger. The failure instead leads to the discovery of the Little Ten-Tails, whose evolutionary chakra ultimately produces artificial Mangekyo Sharingan based on Kamui and Kotoamatsukami. 45 46