Sharingan

History
The Sharingan is held by the Uchiha Clan of the Village Hidden in the Leaves. The Sharingan is derived from the powers of the Byakugan and Akaigan.

Appearance
The Sharingan is a red eye with three small circles around the pupils.

Powers
The Sharingan inherited the Akaigan power to copy the exact movements of an enemy, and the Byakugan powers to see chakra flows, and to recognize genjutsu. The Sharingan, unlike the Akaigan and the Byakuga, must be given time to develop. In the initial stage, the powers are incredibly weak. In the secondary stage, the Sharingan is slightly more powerful. In the full stage, the Sharingan gains its normal powers. After the person closest to the possessor of a full Sharingan dies, they achieve the Mangekyo Sharingan is formed. The Mangekyo Sharingan gives the user three new techniques. The Susanoo, which summons a warrior to assist the Uchiha in fighting. The Amaterasu, a ninjutsu that summons eternal fire that can only be sealed away, never extinguished. And the Tsukuyomi, a genjutsu that allows the user to torture the enemy for what seems like days in another realm, but in fact only lasts moments. The Mangekyo Sharingan puts enormous strain on the eyes, causing blindness, and unless a sibling gives his or her eyes to them, the power of the Mangekyo Sharingan will disappear. If a Sharingan is given, they achieve the Eternal Mangekyo Sharingan, that will last until the user dies.