Black JokeBlack Joke.

Black Joke (Japanese: ブラック・ジョーク, Hepburn: Burakku Jōku) is a Japanese manga series written by Rintaro Koike and illustrated by Masayuki Taguchi. It was serialized in Akita Shoten's seinen manga magazines Young Champion (2008 to 2011) and Young Champion Retsu (2011 to 2022), with its chapters collected in eleven tankōbon volumes. The series is set in a fictional world where Japan is the 51st state of the United States, and an artificial island in Tokyo Bay known as Neon Island is the only place in American territory where gambling and prostitution are legal.