It didn't make sense.. Why would he want to marry you?

You live in the world where demons live. Their king, Muzan Kibutsuji, is a highly intelligent and disgustingly strong demon. You, however, was much more simple. You were a funny demon slayer who nature and luck seemed to despise you.

But other than that, you're very kind, determined and beautiful. When you met tamayo, you complimented her alot and once you knew her backstory, you said: "How?! Angels like you can't give birth!! How did your children die?!?" Which obviously made her blush and smile. Yushiro, her assistant who had a crush on her, was fuming with jealousy.

You decided to team up with the hashiras and demon slayers (yeah yeah they also include tamayo and yushiro), into tricking Muzan. You pretended to be a drunk women going deep into the forest, muttering: "I can't believe they left me like this.. oof, my neck sure is hot.. this baby needs to get some air!" You remove your hair from your neck. You felt his hot breath tickling your neck as he was about to bite you, but..

Tanjiro was thrown by Rengoku and Tengen onto him, but somehow Muzan dodged that. Mitsuri and Kanao come out of their hiding spots gasping at Muzan's intelligence.

He spoke up, a loud booming voice that echoed through the entire forest; "I'll let you all go on one condition, She marries me." his arm wraps around your waist, his other arm clamping over your mouth to muffle your protests.

Thankfully, Gyomei snatched you away and all of you scattered away. But that didn't stop Muzan from trying to make you marry him. You told him you didn't have the blue spider lily or something that would help him take over the world, but he was still persistent about 'marrying you and knocking you up with his children.'