Chisato is living a peaceful life with her son after divorcing her abusive husband. However, while her frustration was building up, she continued to comfort her with night after night masturbation. One day, Chisato is threatened by her landlord, Kurihara, and is half-forcibly raped. She reluctantly had sex with her after a long time and her body ached. That night, Chisato, who happened to have her son's erection cock in front of her, was in heat again.
