Mototani Ran is a 52-year-old housewife. My husband, who I've been married to for many years, is busy with work, and recently we haven't had sex at night at all... I have no choice but to masturbate to satisfy myself, but one day my son saw me doing it. What's more, my son was stroking his penis while watching me masturbate. I couldn't hold back any longer as I watched my son's penis grow... This is our secret, and if my husband finds out, it's all over...