"Silver and Gold") is a Japanese manga series written and illustrated by Nobuyuki Fukumoto.

The series portrays the machinations of men living in the underworld, including speculative stock wars and backroom deals with politicians, deadly struggles for life against vengeful and crazed murderers, and Fukumoto's signature gambling games.

A total of seven movies with the title Black Market Emperor: Silver and Gold (闇金の帝王 銀と金, Yamikin no Teiō Gin to Kin) starring Kiyoshi Nakajō as Ginji Hirai were released on VHS and later DVD between 1993 and 1997.

In the fourth volume, some story developments were changed due to inconsistencies in depictions in the original manga.

[24] In addition, a bonus 13th episode adapting the Serial Killer Ariga arc was released exclusively on Amazon Prime Video in Japan on March 25, 2017.