In 1993, Two brothers named Kakugo and Harara were trained by their father, because they is a earthquake filled with monsters that has been roaming the Tokyo streets. The earthquake was devastating and powerful. Their dad gave them Fortified Armor Shells by Shiro Hagakure, their grandpa. However, Harara was possessed by a mysterious evil person, making Harara's body mutated. Years later, Kakugo moved to Reverse Cross High School. Now it's up to Kakugo to defeat his evil brother... Will he win?