Gennosuke Fujiki
About
Through an injury Fujiki receives in training he inadvertently creates a new technique not too dissimilar to that of the Kogan secret technique "Nagareboshi."
In later times, Fujiki also loses his left arm forcing him to train his shoulder and back muscles to make up for the lack of his missing arm.
Fujiki becomes swallowed into a deep hatred that consumes his being and revenge seems to be the sole purpose for his existence. His smile is both rare and frightening.
(Source: FUNimation commentaries from DVD)