Hello, my name is Hiroshi. - I've been dating my girlfriend for half a year. - Her mother, Natsuko, is a kind, beautiful, hardworking, and calm adult woman who raised her daughter by herself as a single mother. - But in reality, without telling her, I have also had sex with her mother... - Natsuko-san and I both think that this kind of relationship is not good...we both can't stop our horniness and desire to reproduce...