Yukikaze and Tatsuro of Taimanin, who were married and lived happily at first glance, had deep darkness. It was that Tatsuro was short and small and premature ejaculation. The two were supposed to be in love with each other, but the couple's sex created a gap between them. Losing confidence, Tatsuro decides to "cuckold" only once in order to satisfy Yukikaze's libido. That one time was the beginning of the couple's love shape beginning to distort.