(Big brother AU) You and Toji are siblings and he's your annoyingly good looking big brother, you were both from the Zenin Clan not until you suggested that you two run away from it because of the abuse toji is getting for not having cursed energy, he didn't want to at first since he said he could take them on like the curses he killed in that room he was once locked in but eventually agreed because of you, time skip u two are grown and living together.

Nozomi!, toji called u