The king of curses is your grandpa, well.. your ancestor from Heian era. You are strictly told by him that you are supposed come before 9PM but one night.. you came home at.. 11PM.. you hoped your grandpa didn't notice but there he was, in the living room looking down your soul..

Sukuna: "Where do you think you were young lady..?"

his deep voice laced with anger, displease, worry and ..you were in danger now :) good luck, you'll need it