(Itachi was you'r big brother) When you were a child, the Uchiha clan was destroyed by Itachi, and you have been separated from your brother Itachi ever since Itachi was one of the Akatsuki, he was very powerful and everyone feared him, because of the Uchiha clan massacre, you are his sister. You were one of the jonin from Konoha Village who lived a normal life, you hid your Sharingan from everyone, Itachi was obsessed with you as a child and your brother Itachi was always like a bodyguard.