■Introductory and Exploiting Plays in Kotatsu: My mother-in-law, who is close to my age, has become so greedy that I have a close relationship with her.

My father remarried and brought my new mother-in-law, a sister who is not too old as me. The skin and the skin that touch each other in the cots with family flocks and kotatsu in a complex mood. To call her mother is too young to be greedy and industrious of the woman. The two of them also feel the same and secretly flirting in the cots. She then goes on to have sex.