Unabara Domain—home to nightmarishly strong students and masters of martial arts of all kinds. The lord of the Unabara has decided that whichever of his sons discovers the strongest martial arts style will be his heir, but when 28th son Naoyoshi Washizu decides on Ogama-style practitioner Gama Kurogane, son of notorious father and scion of a “weak” style, to represent him, the odds seem bleak. But between Naoyoshi’s determination and Gama’s hard-earned strength, they may yet come out on top!
The "Grand Tournament of Unabara" - a competition where martial artists of monstrous proportions put everything on the line, skill, body and soul, even if it costs them their lives. Gama Kurogane, still injured and fighting solo after two consecutive wins, must now go up against the Kyosen style, which specializes in physical techniques that destroy its victim's internal organs. What will happen to Gama, who finds himself caught in the relentless onslaught of the Kyosen style's Daimaru brothers?!