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!
In the year that the Ogame style disciples have been in training, the Unabara castle town has transformed into an iron fortress bolstered by several moats and walls. Now Gama and his friends set out for the castle keep where Jinsuke awaits! While Kamedembo and Gensai distract the enemy, Gama and the rest try to force their way in through a different gate only to be met with Riko Murasame! It’s time for the newly-evolved Gama to take on Riko, the master of defense!