Jibun, my name is Hiroshi. - I've been dating my girlfriend for half a year. - Her mother, Rieko, is a kind, beautiful, hard-working adult woman with a calm demeanor who raised her daughter by herself as a single mother. - But in reality, without telling her, I have also had sex with her mother... - Rieko and I both think that this kind of relationship is not good, but we both feel horny and cannot stop our desire to reproduce.