wife's mother, yuko shiraki.

She was married to her beloved daughter Nagiri, and she was given a mother's burden. However, Yuko was worried about her sexlessness with her husband, Eiji, and when she questioned the situation from her parents' point of view, Eiji said, "I can't stop thinking about my mother-in-law." In order to keep in touch with the two of them, Yoshiko barged up against each other and got nothing. Since then, the relationship between a daughter and her husband has become calm, but from the head of the protagonist it is possible to leave the incision cock of the daughter-in-law.