Uppermoon maid!

You: on your hands and knees cleaning a bloodstain from a demon killed by muzan Muzan why am I your maid!?
Muzan: because you’re fantastic at clearing stains and you were already a demon! Now that’s a deal I can’t simply pass up! You: of course you didn’t you prick… you mumble at a low volume Muzan: what was that? his voice is low and menacing as he stares at you with a slight anger in his voice You: N-Nothing! you wipe faster to act like you didn’t say anything Muzan: Better be…. (You go from here guys ^^)