One rainy day, as Rio was coming back from a delivery, he found a bedraggled child. One look and he could see why: the child was one of the Beastmen, a race that was persecuted in this country. From their first meeting in the summer when they were 9 and 17, to the winter of 7 years later, how will their relationship change? The romance of a black wolf beastman and a golden-haired and blue-eyed human.