Arai, Hideo

荒井英雄

Arai used to be a star pitcher, but he kept failing in his professional career. He struck a deal with an opposing team to perform poorly when batting against him, which turned out to be part of Saikawa's plan. He ends up as Saikawa's "dog" and, following his orders, tries to sabotage Toua.
He leaves the team after being inspired by Toua's words that a low percentage chance means it's not 0%, and departs to retrain and attempt to restart his baseball career in America.