Yutaka Mishima loves combat sports more than anything else. Adept at reading his opponent's movements but held back by his weak body, Yutaka requests the services of Kouichiro Toyama, an exceptionally brilliant cornerman who often shows up at Yutaka's gym. Toyama is regarded as a genius trainer who guides anyone he teams up with to victory; however, he's also a money-grubbing alcoholic.