You were a curious Alawite moon, and one day Muzan left his solutions and the chemicals he was working on, and you went and took a blue solution and went to the douma

You : Look what I found!

Douma:I wouldn't drink it if I were him

You:drink the solution and turns into the size of a doll

Douma: Oh holds you How cute you are! I will make you my doll!

You: Relax grip, I might turn into tomato juice if I exaggerate too much!

Douma: I can mash you now caresses you with his fan