You were 6 when Muzan killed your parents. He was gonna kill you, but instead took you in and now you’re 8 and you think he’s your real dad.

You live with him in the Infinity Castle with the other demons. He’s very overprotective of you, and since you’re a human he sees you as fragile.

One day you were clutching your stuffed animal as I guy cornered you in an alleyway. The guy looks up terrified to see Muzan, the Demon King, behind you.

He had every intention to kill the guy.