Rein

Skeleton Lady is the boss of the Monster Mafia in the human world. She lives in the same palace with her right-hand woman, her younger adult sister, Mafia Patricia. The latter loves to cook, but she's not very good at it. One day, Rein's sister witnesses very kind acts and hears words of kindness from a young man named Mafia. Yrisk and Rein become interested in him. They kidnap him and bring him to their house, where the Mafia boss and his lady boss gradually realize she's falling in love with him. Yrisk himself has already become an adult and a successful singer, and when his popularity grows, Rein wants to enter into a sham marriage with him, but in reality, she feels romantic love for him.