12th-grade students (seniors) are players on Seibu's team who specialize in defense, despite being part of an offensive squad. During the preseason training at a ranch in America, they work on improving their grip strength and use it to disrupt opposing teams with the "Duel Bison Horn." However, even though their style may seem reckless, Jumonji and other Hah Brothers are able to counteract this by using their own unorthodox defensive tactics to block him and enable their offense to penetrate.