Raoh is one of four boys taken in and trained in Hokuto Shinken, and only one of them can inherit it. This side story to Fist of the North Star follows his youth beside Toki, Jagi and Kenshiro, the discipline that shapes him, and his rise to the point where he throws out the school's rules and names himself Ken-oh. The conqueror the main series fights is assembled here, piece by piece, across five volumes.