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The Sharingan (Literally meaning: Copy Wheel Eye) is the dōjutsu kekkei genkai of the Uchiha Clan that appears selectively among its members.



​Acquisition

When a wielder of this kekkei genkai experiences a powerful emotional condition with regards to a person precious to them, their brain releases a special form of chakra that affects the optic nerves, transforming the eyes into Sharingan; for that reason the Sharingan is described as an "eye that reflects the heart" (心を写す瞳, Kokoro o utsusu hitomi).

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