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!
Gama and Kashitaro, and Shinnojo and Zenmaru split into two groups and make their way to the Unabara domain, where Jinsuke awaits their arrival. Despite their small numbers, the disciples of the Ogame style are faced with a series of attacks by Muho style assassins! One of whom is Banri Omiya of the four divine spears. Banri has long been honing his skills in order to settle his score with Shinnojo. The battle between two geniuses is heating up as they fight to the death over their opposing convictions...!