When Hiroshi visits his girlfriend's house, he can't help but be captivated by her mother's beauty and her curves. That night, Hiroshi is kindly allowed to stay the night, and when he uses her bath, her mother washes his crotch, causing him to get an erection in the itchy air. Then, unable to fall asleep in the middle of the night, he leaves the room and the soft curves of his mother's body as she sleeps soundly in the bedroom catches his eye. The young Hiroshi can't help but get excited and reaches out to touch his mother's sleeping form...!