As soon as her husband left on a business trip, her kind and serious son suddenly changed! Stepmother Manami was tied up with a collar and locked in a cage... From that day on, Manami was trained to be her son's sex pet. She was humiliated by being ordered to masturbate in front of a mirror with a light bulb inserted into her vagina, tied up with clear plastic wrap and raped in an incestuous act, and her mind was broken by all the abuse she endured! With a blank look in her eyes, she began to accept her stepson's discipline... This bitch, who had lost her reason, writhed in pleasure as she was creampied!