Hakuo Academy was once a respected school where many students dreamed of being admitted. Now, its rival academy Seishikan is on a mission to assimilate all other schools, and Hakuo Academy is its next target. Supported by the fearsome Yasha clan, Seishikan students frequently visit Hakuo's campus to assault and forcibly convince their best students and athletes to transfer to Seishikan. Desperate to preserve their legacy, Hakuo Academy enlists the help of Kojirou Fuuma—the only member of the once-legendary Fuuma clan still living in their ancestral village. Kojirou will stop at nothing to defend Hakuo against the Yasha clan, whom the family has feuded with for generations. But will that be enough to stop Seishikan's aggression? Hakuo Gakuin is on the verge of closing down due to students transferring to rival school Seishikan after mysterious injuries happening to students who refuse to transfer. To protect the school and its students they hire Kojiro, a member of the Fuma clan of ninjas. After finding out that Seishikan has enlisted the help of the Yasha ninja clan, who had been rivals with the Fuma for generations, Kojiro gains the help of his fellow Fuma ninjas. Even though they are hired to protect the schools, the two rival clans vow to destroy each other once and for all so that only one clan remains.