As graduation approaches, I, a college student, and my girlfriend Nana, who has secured a position at a top-tier company, are pouring our energy into part-time jobs at convenience stores in preparation for our graduation trip. Recently, there have been more late-night shifts where I'm alone with the store manager. I'm worried that my beloved Nana isn't being teased by that lecherous middle-aged manager... Surely, that can't be happening... On my birthday, when Nana didn't show up even after the agreed time, I called her, only to find her there, spent after being with an insanely virile man...