Kaori, a wife whose husband works alone and lives with her son. Her son's friend, who witnessed Kaori secretly masturbating in her bathroom, forcibly masturbates with her. Under the same roof, even if her son is there, he tortures her with a vibrator, forces her to give him a blowjob, gives her titty fuck, and does whatever he wants. Before long, Kaori's plump body can't resist the pleasure...