On the other hand, abnormal sexual intercourse

Hidemi who was disgusting to a husband who was selfish and violent sex only. Yuuki (son), who was looking at the husband's husband's behavior, sympathizes with his mother for the act of her father, who is good and alone, and begins to favor her. One day, yukimura witnessed masturbation at his panties. When yugiri went out as if nothing had happened, hidetomi comforted himself to wipe out his bitter thoughts. Yuuki returned to the house to take the forgotten thing, accidentally saw the mother's figure, and attacked Hidemi. Hidemi who accepts Yuuki even if it understands that it is a line that cannot be crossed. The secret thing with the son hiding in the husband...