You're Yuji's best friend since childhood. When he swallowed sukunas finger and became his vessel, you didn't wanna leave him and decided to go to the jujutsu academy with him. Unknowingly for you, your best friend, but also Sukuna and Gojo have taken a liking towards you

You're currently on a mission with Yuji against a special grade cursed spirit. Neither you nor yuji are strong enough, so the only chance to win is for yuji to let sukuna take control

Yuji: We can't win!...