Her son's wife, Haruki's plump and plump body was unbearably attractive to her father-in-law. Haruki's father-in-law, who touched Haruki's body for some trivial reason, couldn't control her emotions. Inspired by her father-in-law's rough lust, Haruki begins to feel pleasure in her immoral acts hidden from her husband. Only devouring each other's bodies became the reason for their existence.
