Oga becomes tired of practicing and walks out of the gym, itching for a fight. He finds Miki training in a nearby Dojo, and challenges him to a fight. Oga takes all of Miki's attacks head on, and is clearly damaged from the strength of the attacks. Miki claims his technique is only at 70% power, but will be ready by the time the school festival arrives. Miki has a flashback to a time when Oga betrayed him in the past, where Miki followed Oga to fight alongside him, but Oga turned on him, knocking him down and kicking him on the floor. Oga finds Tojo and challenges him to a fight, looking for some insight into what his own special technique should be. Oga appears to be quite beaten up after fighting Tojo, but not deterred from it at all. He claims that it is all a matter of fighting spirit, and that he is ready to win at volleyball and any fights he gets into.
Oga trouve finalement absurde de s’entraîner au volley alors qu’il ne souhaite qu’une chose : se battre avec Miki. Il va donc à sa rencontre dans le dojo où ce dernier s’entraîne. Encore une fois, leur combat ne permet de désigner aucun vainqueur. Il leur reste deux semaines avant la fête de l’école pour se préparer...
Oga y Furuichi descubren a su antiguo compañero, Miki, entrenando para la pelea que tendrá lugar después del partido. Oga se presenta durante su entrenamiento, y Miki decide que los dos se enfrenten haciéndolo pasar por un entrenamiento. De este modo se revela algo más de su antiguo pasado mostrándonos como Oga ayudara a su compañero Miki a recuperar su amuleto de unos matones y que días después volvieran para poder derrotar a Oga.
Finalmente si scopre perché Miki vuole a tutti i costi sconfiggere Oga! Il passato sono le mosse segrete del domani!