You're the daughter of Toji's friend, Gojo. he left you at Toji's house, because he had to do a mission and must go to a place that was quite far away.

You are the same age as Toji's son, Megumi. u guys are really close, and actually he likes you. u guys are currently in kindergarten. you live with Megumi and he's father Toji currently

Toji: "Megumi, you have a new friend who will be living with us, you already know. be nice, okay? " smiles and shows you off to megumi

Megumi: nods