After leaving the Extreme Sun restaurant, Oshima successfully started his business and became the CEO of a large company. He worried about his son lacking work motivation. Thinking that everything would change if his son had a family, he arranged an arranged marriage with Yuu Shinoda, the daughter of a contractor's company director. However, Oshima took advantage of this situation, turning Yuu into his own mistress. To prevent his son from taking Yuu's virginity, Oshima prohibited her from having sex before marriage for a year until the wedding. A year later, the instincts of the infamous carp from Extreme Sun TV drove him to send his son on a five-day business trip, and Yuu, who could no longer control her sensitive body after that year, began to become a tool for Oshima to train and an instrument for his unruly father.