Overwhelmed by a busy work life and neglected by her husband, mother Shizue struggles with pent-up desire. One day, she accidentally discovers her son masturbating. His body, more developed and impressive than her husband's, had long drawn her attention. Mesmerized by the sight, Shizue can't resist and begins pleasuring herself. That night, she sneaks into her son's room and quietly reaches out toward his sleeping form. She rolls the tip of his cock with her tongue, slowly licks along the underside, and before long, loses herself completely—noisily slurping and deepthroating his shaft, taking it all the way into her throat. This impulsive act becomes an overwhelming release for her.