Quiet Man of the Underworld

暗黒街の静かな男

Also known as Ankokugai no shizukana otoko

Upon arrival in the port of Yokohama, former amateur boxing champion, Eiji Yamashita by chance meets his old rival, Kajiwara, who later died in a hit-and-run accident. Suspecting yakuza involvement, Eiji confronts the underworld with iron fists.