Yuzuki (voiced by Rie Kugimiya) is an ordinary female high school student. One day, by chance, she was transported to a world called "God Fang" by her mobile phone. There, werewolves and vampires live together with humans. Himemiko, who has a special bloodline, maintains the peace and balance in this world. But one day, Himemiko disappeared inexplicably, and the balance began to tilt. At the same time, monsters called evil spirits appeared one after another, and the whole world was on the verge of collapse. Here, Yuzuki met a general named Toyotomi Hideyoshi (voiced by Hanae Natsuki) and was rescued by him. Soon, Toyotomi Hideyoshi discovered that there was a mysterious power in Yuzuki's blood that could awaken the Crescent Clan. After that, the Takeda Army, the Uesugi Army, Sanada-kun and other factions all knew Yuzuki's secret, and Yuzuki became the object of their competition.