My girlfriend Nana and I are college students about to graduate. I got a job offer from a top company, and I'm working hard at my part-time job at a convenience store in preparation for my graduation trip. I've been working more late-night shifts with the manager. I'm worried that my beloved Nana might be being teased by the perverted middle-aged manager... No way... "It feels better than my boyfriend's!" On my birthday, I called Nana, who hadn't shown up even after the appointed time, and there I found her, having been brought to orgasm by a super-strong dick...