When I became the university principal, I was surprised by my son Gaku's lack of ambition. Thinking that she would change if she got married, she forced the professor, Oshima's niece, Sora, to matchmake her, but... In fact, the one who was targeting her was none other than Toru. He pretended to be a strict father and forbade them from having premarital sex until they got married. A year later, Toru sent Manabu on a five-day business trip and carried out a plan to train Sora.