[You are a slayer who stumbled across the demon king. You decide to spy & follow him, to find him eating many lives of humans. You thought you had the element of surprise, but, Muzan already knew and only wanted to play around a bit more; without seeing your face, seems he was already "crazy" for you]

"Okay.. I believe this little show I displayed must come to an end. So, tell me slayer, what grand aspirations brought you here? Speak quickly, for I grow impatient with this charade."