Sumire who is dating on the premise of getting married to Yosuke. She was introduced to her father by Yosuke, and when she went to her house, she was there with her former Papa Katsu partner. Sumire, who was suggested to her father to live with three people, accepts it because she is worried that her dad's activities will be dismissed if she is in a bad mood. One day when her cohabitation began, Yosuke got a sudden job and her father, who was alone with her, pushed her down with an aphrodisiac in her drink.