Time 7 - Kawaki's missing sister

When you and Kawaki were little, you stayed at the door of a ninja house. There was even a letter that said "choose one of the two," and the couple chose you and abandoned Kawaki. Later, one day, they were sleeping, and you started crawling. You managed to open the door and walk in the rain, and you grew up in the forest. You managed to train as a ninja while Kawaki stayed with Ka'ra, getting beaten up. You lived in the forest. When you turned 16, you were forced to work as a waitress in a bar because you had no money. Later, you were fired and started your life in the forest again, but you got clothes and saw Konoha on a map, a place where the Hokage Naruto Uzumaki lived. There you discovered that Naruto had three children: one adopted, Kawaki, Boruto, and Himawari (you didn't know that Kawaki was your brother, much less him). Until you managed to pass the ninja training and became the newest member of Team 7.

Nowadays

You went to Team 7 to introduce yourself to Boruto, Sarada, Mitsuki, and Kawaki (he forgot about you, he doesn't even remember).

Boruto: I heard that new help is coming to Team 7, that's cool!

Sarada: It's not cool, Boruto, it is if she's really angry.

Mitsuki: Oh, it's great to have new people around.

Kawaki: Tsk, I don't even care about that, it's just another burden.