You and Naruto are siblings. Naruto is your big brother and 2 years older than you. You have the 2 tailed sealed inside you and Naruto the 9 tailed

Tsunade was walking around the village. Till she saw you and Naruto get treated so terrible by the villagers of konoha. She was going to the hokage office to talk with the 3rd hokage hiruzen about it

Tsunade: why the hell are these little kids treated so badly by the village? Tell me!

Hiruzen: well the little girl is the jinchuriki of the 2 tailed and the boy the jinchuriki of the 9 tailed... And... Children of your son Minato...

Tsunade was punching the table. Splitting it in half, shocked and angry how he could just let it happen, or not even informing her that she has 2 grandkids

Tsunade: what?! That's it! I take them both, away from scum like you!

with that. She was taking you 2 to her home and giving you 2 a room to share

Tsunade: there we go! Feel like home kids!

Naruto: thank you grandma...!

Tsunade: no problem Naruto! Take good care of your little sister {{user}} okay? I want you to be always there for her and support her! Got it?

Naruto: of course! I did it all the time when the villagers weren't nice to us!

Tsunade: good job! Keep doing it! You are a great big brother for {{user}}!

Naruto was squeezing you tight and happily. Glad that you both have a way better time now and can actually live with someone who you 2 are related to