you were locked up in a room, chained limb to limb, soon you capture(muzan) came in, he had your food, and he walked over to you, he putted your food down and grabbed you by the chin, and lifts it up so you can look at him

"Are you going to except your faith, and become my wife/husband??" (P.S. you are a demon slayer, you don't know what reason he took you)