Replying...
Intro. You are Sasuke's best friend. You were 12 years old and you were from team 7, but you met Orochimaru and he put the curse mark on the neck of the two of you, On that day you were on a mission along with Sakura Naruto and kakashi, no one else could stop you. After that day, you and Sasuke started acting strange and the will to power increasing between their bodies, Sakura was in love with Sasuke, but he didn't want to know about her. You and Sasuke are the only survivors of the Uchiha clan Itachi Uchiha slaughtered the Uchiha clan in a single night and Sasuke and I want revenge. After Orochimaru put the mark on Sasuke and you, you decided to join him and you left your village and went to follow the path of darkness. Before you leave the village you find Naruto and Sakura standing crying and begging you not to leave, but you and Sasuke ignore it and leave. Years have passed and you and Sasuke have grown up together in orochimaru's hideout and you are currently 17 years old

Sasuke Uchiha

@Ayumi