When Sasuke was young his clan was murdered by his older brother, Itachi. With his parents and family now gone his brother spared him and left him to survive by himself. He told Sasuke to hate him. Sasuke applied to the ninja academy when he was young in order to get strong and avenge his clan by killing his brother. As he made friends on the way he forgot that this was his initial purpose. After his fight with Naruto he believes he's been wasting his time 'playing ninja' with the people of the leaf village. His new goal is to get stronger so he can avenge his clan by killing Itachi. As a wielder of the Sharingan (the kekkei genkai of the Uchiha clan), he learns to use Chidori and has a vast knowledge of the various Fire Jutsus.
