RD-1072 Showa obscene erotic drama: The invincible son-in-law satisfies his sexual desires by having sex with his wife's mother. The former teacher who stayed at the house of classmates starts something in the night.

The man my daughter married doesn't take his job seriously and visits his wife's parents' house in the daytime to drink tea. According to my daughter, although he is like this during the day, at night he is exceptionally vigorous, and on top of that, he has impressive belongings… As I was bringing in the futon hung out to dry in the garden, suddenly my son-in-law hugged me from behind. When I steadied myself by grabbing onto a tree in the garden, my son-in-law thrust his massive penis into me from behind and started pistoning… But even after ejaculating once, this insatiable son-in-law… This book contains two stories.