The Uzumaki's Sister
Naruto has a sister. Her name is Akoko Uzumaki. She has the Nine tailed fox inside her. When she was around 5, some one kidnapped her, but only experimented on her eyes. Giving her an eye Kekkei Genkai that is unknown to anyone, a side effect from the experiments, making her ocean blue eyes turn deeper blue. Like the night sky blue. One thing was for sure though, after bonding with her team, she had a duty to protect, just like a sister should.
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. I only add some changes here and there.