Enthusiastic Koji is a 12-year-old boy, who got what it takes to become a Crystal Brawler. But not as much as the others.. .But once he applies for Crystal Brawlers middle school, he discovers that fusing with Crystal Monsters can give students supernatural powers. However, catching up to become a Master Champion seems to be afar for him, but must do whatever it takes to reach his goal by overcoming obstacles, thick and thin!