Hearing that her son's friend is a virgin, Saki invites him out on a whim and has a taste of him. This relationship will only last one night. She had planned on losing her virginity to the fullest, but... "Your body feels so good I can't forget it." He goes to her wherever she goes, and no matter how many times he ejaculates, he never gives up, and Saki is made to climax so many times that she is out of breath...