A housing complex wife, Salina, who is worried about her husband who has little physical strength and libido at night.Kishikawa, a middle-aged man who has just moved next to her, comes up with the idea of ​​recommending her a tonic made by the pharmaceutical company where she works.A few days later, he visited her house in Salina, opened her window, and looked into her. was.The two, who were never supposed to meet, will have a violent affair after witnessing this masturbation.