At the end of the Third Ninja War, a young man from Blue Star brought his own plug-in soul to travel through the world of Naruto and possessed a useless Uchiha.
From then on, a sinister Uchiha Amasawa began to appear, and with the continuous evolution of Sharingan, he rewrote the trajectory of history.
Whose Sharingan is the most powerful? Whose Sharingan is the most evil?
Sarutobi Hiruzen: Is there any need to say that?
Uchiha Madara: Of course not me!
Uchiha Itachi: That must all be my brother!