DASS-426 My favorite mother was having sex with my private tutor, and my sexual habits were distorted. Mary Tachibana

Mary, a novelist and single mother raising her son, uses a matching app to interview for work, and ends up dating a medical school student she meets there. He's young and good-looking, and he shows off his sadistic side, and he gets hooked on it more and more. Even though I have a son, I get so absorbed in sex that I forget being a mother and become a woman...