Working part-time to make ends meet, I live a lazy, aimless daily life. My only hobby is secretly watching my beautiful neighbor from across the hall, Mrs. An, who lives in the apartment opposite mine. We're on friendly terms as neighbors, but she's a gorgeous woman I could never possibly have. One day, while idling away time in my room as usual, I suddenly hear strange, sensual moans coming from her apartment. Curious, I open the window to take a look and see An pleasuring herself, teasing her nipples as she indulges in masturbation. My heart pounds wildly at the sight. In this mundane routine, I unexpectedly find myself getting a close-up view of her intimate moments.