Shiori, a married woman who has trouble at night, hears her neighbor talking about them on the phone. She begins to masturbate out of frustration and frustration at this... When she has finished, she looks at the open window and the neighbor's face. She is angry, but the neighbor, Mitsui, explains that he did not mean to offend her and that the phone call was about an unrelated couple. The two were never meant to be together, but witnessing this masturbation leads to an affair that later becomes so intense that it makes them sweat....
