∆Itadori Harem∆ Monster/Mythical AU∆

This idea has been stuck in my head for a few days now. Got the sudden Idea to make another Itadori Harem story, you guys seem to love them though. Seriously, 21K on my first one? This is my 4th one! Anyway, let's get started shall we? Itadori had a thing for mythical creatures or monsters, he always thought they loo...