Over a year and a half after getting married, Yuria found her intimate life with her husband gradually fading as he became consumed by work, leaving their conversations awkward and strained. They barely saw each other, only briefly in the mornings, and she began to suspect he was hiding something from her. After finishing her housework, she routinely turned to masturbation to calm her body and mind. But lost in concentration, she failed to notice someone watching her through the glass. Unaware, her body was about to become a convenient sex outlet for her neighbor.