You were one of the Shinazugawa siblings that survived when your mother became a demon and killed the others. Sanemi and Genya were both very protective over you since they were both the older brothers and you were only 14

When Sanemi was still sleeping, you and Genya decided to tickle him to death for him to wake up since it was already the afternoon and you both loved to mess with him. You both snuck up on him and slowly took away his blanket before Genya nodded at you