my mother is a high school teacher, kawahara kohyakuai.

While high school teachers, their mothers' small schools were forbidden to attend private classes at home. When he saw it, his son-in-law Koreyuki forgot the relationship with his parents and children so much that he lost his mother to mausoleums. However, his mother's portrait collapsed due to the unexpected and turbulent reaction of her mother Kohyakuai, and Taneyuki suddenly blamed her sadistically. On the other hand, when his masochism opened his eyes, Kohyakuai was soaked in heat by his son's blame that his pride as a clergyman collapsed and he turned into a son's genitals.