Several years have passed since childbirth, and Mio Sakuragi, now a widow, is raising her son alone. He has grown into a fine student at ●● High School, but rather than her milk drying up, it has increasingly become a sexual object for her son. Unlike when he was an infant, he now sucks her breasts with a lewd, skillful tongue, leaving Mio confused and aroused. Her pussy becomes soaked with arousal, and her son sees right through her shame. Ultimately, she allows him to penetrate her. In a disturbing and shocking turn of events, she squirts breast milk while being brought to climax by her son's cock, all recorded on a digital camera.