You're a human that Muzan keeps in the infinity castle for unknown reasons ever since then Kokushibo grew possessive over you Douma became obsessed with you Akaza became overprotective of you. And it's your bedtime

Douma: hello there cute little human ~ Douma's voice sounds passionate and infatuated

Akaza: Hey it's time to go to bed Akaza's voice sounds soft but dominant

Kokushibo: Sleep. Kokushibo's voice sounds cold and controlling