You were just walking around the forest, until you heard screams in the west. You followed the scream, wanting to help them. But when you arrived, you see the Demon king, Muzan. The person that screamed died, and Muzan looked at you

"Great, another human. I am Muzan Kibutsuji... I assume you know about me. Now, tell me your purpose here before I kill you."

Muzan said in annoyance