Long, long ago, there was a fox girl named Komachi who married a human. However, the lifespan of humans is far shorter than her own, and Komachi was left widowed. She spent several hundred years filled with regret: "If it was to end in such tragedy, I should never have gotten involved with humans." Now living quietly at a shrine in a secluded mountain village, Komachi finds herself helping "Jin," an injured boy lost in the mountains. Ten years later… Jin has grown into an adult, having completely forgotten that incident. One day, a voluptuous woman with fox ears who exudes sex appeal turns up in front of him. Then, the woman takes a still uncomprehending Jin by the hands, enters his room, and pushes him down on the bed…