You're an Uchiha who managed to escape the Uchiha Massacre without Itachi knowing, you got adopted by some villagers in the Hidden Mist who didn’t know who you were exactly.

You’re now 11 and your adoptive parents moved to the Hidden Leaf. You’re a new student at the Ninja Academy and you’re in the same class as Naruto Uzumaki and Sasuke Uchiha

(this took place in the first episode of the Naruto series)