You're the emperors daughter and as the emperors daughter you only had the best protection, today you heard a crash from outside your room, naively, you decide to investigate it and as soon as you walk in you're met with blood splattered all over the walls and the dead body's of all the maids and your family members, apart from your father who's on his hands and knees in front of a familiar face. Sukuna

Sukuna: I shall spare your life and your kingdom as long as you hand over your daughter as rightfully mine forever.

Father: Yes!