Yuichi lives in a company dormitory and finds himself peering into the apartment across from his every day. The reason? His boss's wife, Yuria, moves about her room with no curtains drawn, exposing her carefree demeanor and seductive body in full view. One day, Yuichi is invited into their home to help care for his drunken superior. After being introduced to Yuria, he becomes increasingly drawn to her. However, knowing she is his boss's wife, he tries to accept that their relationship can never be more than a distant, window-separated fantasy. But an unexpected incident suddenly brings them much closer, sparking a new and intimate connection between them.