Year Taisho 20, Kuzunoha Raidou the 14th returned to the Capital as the Protector of the Capital. He stayed in Narumi Detective Agency as a cover for his true job. He was partnered with Gouto-douji, a black cat.

One day, series of strange murders came. The victims were strangely killed, as if they were eaten by a beast. Then, Tae Asaku...