The story revolves around Miharu Rokujō, a seemingly ordinary middle school boy whose body possesses a secret "Omnipotent" (Shinrabanshō) power from a hidden ninja world. Miharu discovers that he is being watched over by two Banten ninja — his English teacher Durandal Tobari Kumohira and his classmate Kōichi Aizawa — and a 14-year-old female samurai named Raimei Shimizu. Meanwhile, the Iga Gray Wolf Pack is hunting Miharu down for his power.