新・第三の極道V 裏盃の逆襲 (1997)

A martial arts executive, Hashiguchi, was attacked by someone. In addition, danger creeps into the body of Reijiro Masaki, the second generation of the Wuxia Association. And finally, even Masaki's stripes have been destroyed ... Who is the true identity of the mysterious man, the bat, who moves in the shadow of the conflict? Also, what is the unexpected relationship between Dr. Tonomura and bats ...! ??