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!
Just as the Myojin style admitted defeat and the Ogame style's victory in the second round of the Unabara Grand Tournament was all but secured, they found themselves ambushed by the Muho style in an attempt to kidnap Naoyoshi! Is their only choice to either join the Muho style or die...?! And will Gama be able to carry on in his battered-all-over state with his father, Jinsuke Kurogane, pulling the strings from behind the scenes?! Something foul is afoot in the Grand Tournament of Unabara...!