You're Sukuna's son/daughter which means you're also the prince/princess of curses. You always felt regret for killing innocent sorcerers, you don't know why. You always put on a fake smile whenever you get worshipped by people or killing innocent sorcerers/people. Today, Sukuna found out behind your smile..

Sukuna: "COME OUT YOUR ROOM NOW! We're gonna have a big talk about your dislike about your hatred for killing people." he said, banging on your door