After Nanyou Academy, led by Sonsaku Hakufu, joins forces with Ryuubi Gentoku's Seito High School to defeat Sousou Moutoku's Kyoushou Academy at the Battle of Chibi, the calm that follows does not last. Hakufu takes on a pupil whose behavior mirrors her own, and when a tournament among the school heads begins, Hakufu's carelessness leaves her pupil fighting in her stead. The contest hides a scheme to seize control of the clans. Meanwhile, Sousou is quickly regaining strength, a ponytailed girl calling herself Bachou Mouki of Ryoushuu storms Kyoushou to challenge him, and Nanban High School emerges as a new power. Expect ecchi-flavored action built around brawling students.