Makoto lives a quiet, uneventful life as a middle-aged NEET in his apartment. But his mundane routine takes a sharp turn when Shihou, a married woman, moves in next door. Strangely, she appears without a bra, her gaze and demeanor radiating a bold, lustful energy. Is there some hidden motive behind her provocative actions and words? Drawn to her mysterious presence, Makoto gradually begins to drift away from his ordinary life. What could be Shihou's true intentions?