In the Kanto region, seven high schools fight to the death for absolute power. Each fighter is the reincarnation of a glorious warrior from the Three Kingdoms period, placing them in a perilous endeavor to overcome their often cruel destinies. Among them is the airheaded Hakufu Sonsaku, a student at Nanyou Academy who—despite possessing brilliant martial art abilities—is deemed to be killed at a young age by the ruthless Ukitsu.

However, her fellow classmate Koukin Shuuyu is tasked by Hakufu's mother to protect his cousin from this grim fate. To add to his burden, Hakufu is subject to sudden bursts of anger, where she loses consciousness and unleashes a destructive power that threatens her own life. Together with Nanyou's "Big Four," Hakufu and Shuuyu will have to foil the plans of their main rival schools and uncover the true nature of Hakufu's powers before it is too late.