A mother feels a sense of crisis about her son, a sex monster whose sexual desire is so strong that he masturbates from morning to night every day, jacking off at least 10 times a day. When she consults her former slutty friend, she is stirred by the former slut's blood and begins a physical treatment to relieve his sexual desire! He immediately gets a full erection at the sight of a real woman's body, which is different from the photos and adult videos! He forgets himself and devours his friend's body, ramming his dick into her again and again without any hesitation! He is made to cum so much that he convulses in the repeated sex that Haruka exceeds the former slut's imagination!