In the Taishou era, Kiyo Fukasaku moves to Tokyo to attend Imperial University. After losing his way in the winding streets of the city, he has a chance encounter with a man named Ozaki, who seemingly recognizes Kiyo's surname. In exchange for completing household chores, Ozaki offers Kiyo a place to stay, and the two begin living together. Their days blend together, one by one, until Kiyo learns Ozaki's secret—the man is a kitsune spirit who has lived for hundreds of years. In addition, Ozaki only agreed to let Kiyo live with him to repay a debt he held with Seishirou Fukasaku, Kiyo's grandfather. Between a kitsune who claims to hate humans and a boy whose disposition has awakened old memories, can there be a happy end? [Written by MAL Rewrite]