Yuu and Yuria have to live with their new father due to their mother's remarriage. The two worked in the sex industry in secret, but one day, their father-in-law called them over for a 3P course without knowing that. The two of them look down on the idea of sex work when their mother is there. Meanwhile, due to the recession, Yuu gets fired from her job at the sex industry. Yuu, who doesn't earn enough money, takes advantage of his father-in-law's love of adult entertainment and cultivates eroticism.