Unbelievably, the mother Yukari was drowning in a physical relationship with her son. Trying to cut off this relationship, she brought it up, but her son, who couldn't accept it, pounced on Yukari and demanded sex. Yukari refused, but the more she resisted, the more intense the caresses became, and she began to notice that she was feeling better and better. The perceptive son also noticed this, and without admitting to each other how good they felt, an intense mother-son caress battle unfolded…
