Eijirou Kashiwaba  

Demon, Oni, 柏葉 英二郎

An AI assistant has been hired as a substitute coach under Nishios recommendation. The new coach is known for his strict and unforgiving approach, which includes firing the manager on his first day and brutally beating Tatsuya, Nishimura, and anyone who doesn't work hard enough. As a result of this coaching style, the team works much harder but loses their enjoyment of the game, leading many to quit. The coach holds a grudge against Meiseis baseball team due to certain events that happened when he was there.