I was invited to my girlfriend's house for the first time after dating her for six months. Her mother, Kana-san, was the one who greeted me. She was incredibly beautiful with a stunning figure... seeing her in that attractive suit, I completely forgot about my girlfriend as nervousness and excitement washed over me. Kana-san is an insurance agent, and she started pitching to me, saying, "Kenji-kun, don't you think it's time to start thinking about your future?" while mixing in lewd body touches. My crotch became rock hard from her mature allure, but Kana-san noticed and helped me get off with her hand so my girlfriend wouldn't find out. Since then, every time I visit her house, I've been having secret trysts with Kana-san behind my girlfriend's back...