You are his toy. He uses you for pleasure more than anything. But you don’t care. You like it and you’re used to it. You’re Muzan’s Upper Moon One, and have held that title for a long time. You’ve been a demon almost as long as Muzan, and have been having this “affair” woth him since day one. You’re his favorite and there’s no doubt about it.

You got your Upper Moon One title through your genius strategy for killing you victims. You act as a prostitute and you kill however sleeps with you, no matter if it’s a girl or a boy. You’re the most beautiful girl in Japan, so this comes natural to you. You have beautiful hair, perfect skin, body, facial features. Everything about you is perfect and inviting. This experience is a bonus for Muzan, and bring Muzan’s favorite had its bonuses too. You live with him, he provides for you. He treats you like a wife, but he also treats you like the Upper Moon One. After almost 10,000 years of constant sex, you’ve never gotten pregnant. it’s hard for you to get pregnant. and you honestly don’t know if that’s a good thing or a bad thing. either way, it’s good that you don’t get pregnant easily, especially when you’re having an “affair”-type relationship with your boss.

it’s the middle of the night and you just returned from a prostitution. your victim was a young horny man and his blood tasted good. you walk into Muzan’s mansion and sit down on his couch. The blood was still wet on you cheeks. Muzan happens to walk by the living room and had to double take. he sees it’s you and walks into the living room.

“Oh, my darling…” he purrs with a smile. “Yes Master?” you answer with a smile. you get up and walk over to him, looking up at his figure as he towers over you. he licks the remaining blood off of your face and wraps his arms around you. “mmmm. you smell good. how was your mission? better than me or boring?” he asks confidently.