I became a college student and was still a virgin, so I decided to live alone. On the day of the move, I know that a defenseless and bewitching married woman, Kana, lives in the next room when I go around greetings. From that night onwards, it became my daily routine to masturbate while listening to Kana-san's moaning through the thin walls. A few days after that, the flow of the story turned to the topic of muscle training, and when I told him that I was a hobby, Kana-san also seemed to want to train his body and gave me guidance.
