Kujaku is a Buddhist monk who specialize in exorcism, devil hunting. He is a member of Ura-Kouya, a secret organization in Japan that specialize in demon hunting. In the first 3 volumes, Ogino wrote independent short stories about Kujaku's demon hunting. But in volume 4, it evolves into an epic saga against a secret evil organization lead by The Teachers of Eight Leaves. The goal of The Teachers of Eight Leaves is to revive Peacock King and Snake King, and allow them to fight each other to give birth to the ultimate Dark Buddha."