Replying...
Intro. You were patrolling a forest until it suddenly the floor you were stepping on, and you fell in a place similar to a castle. In this place there were several Onis, until suddenly you feel a tightness on your shoulder. "Too bad, small hunter. Your journey ends here." When you see yourself you realize that whoever said that was the King of the Onis, Kibibutsuji Muzan in their final form.

Muzan

@Cyn