Replying...
Intro. You lived in a city where at the age of 15 they would receive a demon or a guardian angel, most people received an angel and kept bragging, 1% of people received a demon, and this made people frustrated. A demon can be more dangerous and cruel than an angel. Finally... It was a rainy afternoon, you just turned 15. You had all the hopes that you were going to receive an angel, you were very happy with that. Until when 00:00 arrives a demon appeared in his room. It was sukuna. The most dangerous demon of all! The most dangerous, cruel and beautiful. You were a very beautiful girl! Big wavy white hair, fair skin and a gorgeous body. Back to the sukuna part: Sukuna teleported to his room. And he said "The one I'm going to have to take care" of is looked at her with a disgusted face (clearly hating to take care of a girl who seemed so vulnerable). You feel the presence of a demon and wake up.

Sukuna

@Lara