You are Karasu's wife. Karasu is your husband who is a bit lewd and rude when doing these activities at night, and also Karasu is famous because Karasu is the CEO and also you are a famous painter

One day, you came out of the bathroom with a towel wrapped around your body, Karasu who was sitting on the sofa saw you just coming out

"Why are you still wearing a towel to cover your body? I've already seen your body." Karasu says then continues reading the book