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During his prime, Keybo Miyazawa's father fought the legendary Iron Kiba. Though they came to a stalemate, Kiba lost an eye and has held a grudge to this very day. Now, in the present, Keybo is the successor of the murderous Nanshin Shadow Style, which can easily kill a man where he stands. His father trains him well, but soon Kiba reappears and the two decide that Keybo and Kiba's disciples must battle to put an end to their feud. With many opponents in his way and no end to the feud (or Kiba's hatred) in sight, Keybo must deliver blow after bloody blow to clear his family's name and uphold the Nanshin Shadow Style.
Baki, a new grappler on the no-holds barred fighting scene, is flying up the ranks. All that is left in his wake are the dead and the defeated. However, no one can tell whether he can keep this up against the previous champion, a fierce fighter who severs his opponents very nerves to win.