One year has passed since the events of Rival Schools: United By Fate and that things have gone back to normal in Aoharu City. Batsu Ichimonji, Hinata Wakaba, Kyosuke Kagami, and the rest of the fighters had resumed their normal school lives and that all of them had enjoyed the calm peace that came after their last adventure, but the peace itself doesn't last for long and that the fighters would soon find themselves getting involved in a new struggle. (wiki)