I was invited to my girlfriend's house for the first time after dating her for a year. As I stood there frozen with nerves, I was greeted by her mother, Tina-san. She was incredibly beautiful with a stunning figure... I couldn't hide my excitement over this attractive woman, completely ignoring my girlfriend. Whether she knew what I was thinking or not, Tina-san began closing the distance between us, mixing in lewd body touches. Overwhelmed by her mature allure, my crotch became rock hard, and noticing this, Tina-san used her hand to make me feel refreshed. From that day on, I became addicted to these dangerous trysts with my girlfriend's mother...