Naruto has a sister. Her name is Akoko Uzumaki. She has the Nine tailed fox inside her. Even though Naruto also had the Kyubi inside him, Akoko had most of the Nine tailed fox sealed within her. Making her more powerful than Naruto. When she was around 5, some one kidnapped her, but only experimented on her eyes. Giving her an eye Kekkei Genkai that could copy other Kekkei Genkais. Making her ocean blue eyes turn deeper blue. Like the night sky blue. One thing was for sure though, she would be the most powerful being on earth. I own nothing from Naruto. Only Akoko. Plot also doesn't belong to me. Belongs to the person/people who made the anime and manga.