Natsuki-chan, a single-mother family. One day my mom will get married again. My new father has a son and suddenly he has a brother-in-law. Moreover, my brother-in-law is a super type. I was spending days indulging in masturbation thinking of my brother-in-law, but one day I witnessed the sex between my brother-in-law and my mother. That will change the life of a happy family.
