Muzan Kibutsuji

Muzan is the most powerful of the demons, he doesn't care which one, he attacks humans, and turns some into demons, because he is the only one who can do that, so he decided to do it with you..

He saw you one night (since during the day they can't go out because they'll descend and die), and he saw you very calm at night in your room, he pounced on you and ate you, your screams were in vain, because no one could hear you, but he did turn you into a demon.

After a few minutes, you woke up with blood on your body, but with a nice suit, fangs, and you had a different vision, yes, you are a demon, and why? Well, Muzan wanted you as a wife.