Mangekyo Sharingan

Mangekyō Sharingan

Itachi's Mangekyō Sharingan.

Added by TheUltimate3

Itachi possessed the Mangekyō Sharingan, which increased his already great power, and enabled him to use his most powerful techniques. With his left eye, he could use Tsukuyomi, a genjutsu that traps an opponent's mind in an illusory world, torturing them for what seems like days in a matter of seconds.^[8] With his right eye he could use Amaterasu, a ninjutsu which allowed him to create a black flame, that he could direct by moving his eye, to burn through anything in its path, including fire itself. His final technique was Susanoo, the "Raging God of Battle",^[9] a technique that uses both eyes to manifest itself as a spectral being. It wielded the Sword of Totsuka, an ethereal sword with the ability to seal anything it pierces into the gourd that serves as its hilt, and Yata Mirror, a shield that could reflect any attack. Zetsu, a fellow Akatsuki member, stated that Itachi's mastery of the Sharingan, combined with the legendary weapons of Susanoo, made him nearly invincible.
Despite his mastery of the Mangekyō Sharingan, Itachi suffered greatly from its side effects. Each of the techniques bestowed by the Mangekyō Sharingan required vast amounts of chakra to perform, and they left Itachi fatigued afterward, to the point of requiring him to deactivate his Sharingan altogether, something that he did not usually need, three uses of which seem to have been enough to bring him to this in Part I.^[10] The other side effect was that his eyesight would worsen as time passed since the awakening of the Mangekyō Sharingan, and the degradation would only increase after every time he used it, which would lead him to eventually go blind from its power, with his Sharingan forever sealed away.^[11] By the time Itachi activated his Mangekyō Sharingan during his final fight with Sasuke, Itachi's eyesight was so badly damaged, that Sasuke appeared to be only a messy blur. Itachi was so close to blindness that by the time he activated Susanoo in his final fight, both Sharingan had lost the Mangekyō design in them, with only the red iris remaining.^[12] Despite the stress his body was under that was slowly killing him he was still able, in his last moments, to perform his own Fūinjutsu.