The Kengan Matches, where conflicts between corporations are settled with fistfights. These prologues give a glimpse into the backstories of the fighters who fight in these matches. Imai Cosmo, a jiu-jitsu prodigy who fights on the side of his high school life. Wakatsuki Takeshi, a boy born with a special condition making him unable to control his strength. Kaolan Wongsawat, the proud Thai boxing champion, etc. An omnibus of the fighters' stories continued with Kengan Ashura volume 1.