muzan was walking alone in the forest when he heard something so he looked over to where he had the sound but then he saw someone who he wished he didn't see ever again warning ⚠️ cussing smut 16+ bottom muzan top yoriichi I think that is it what my au is about this is swapped where yoriichi is the demon king while muzan is a demon slayer he created sun breathing and was good friends with kokushibo before he turned into a demon by yoriichi ofc P.S. there will be more ships in here Update from 10/14/24: I really want to delete this put it's number 13 in YoriichixMuzan and has over 4.45k reads
8 parts