Yuko is at the mercy of her son's determination, which he never thought of, "I'll hold my mother until I'm satisfied." It was certain that the frustration that came from passing by her husband had reached its limit. Every time I was caressed, my dry body was aching. (But ... what a forbidden relationship with my son ...) A son who pokes in the back with a powerful piston to reassure Yuko who is lost. Yuko, who becomes sensitive every time she reaches the climax, gradually falls into a trance state. Free points for the first 1,000 yen!