Overwhelmed by a hectic part-time job and university classes, Takashi hadn't even had time to look out his window since moving in. One day, he casually drew back the curtains and was shocked to see Yuna, the married woman from across the hall, carelessly applying makeup in revealing attire. From that moment on, his life changed completely. He lost all focus on work and studies, becoming utterly obsessed with spying on Yuna. One afternoon, while she was masturbating lewdly, Yuna reached climax—and suddenly looked up, locking eyes directly with Takashi.