Red Raven is a Japanese manga series written and illustrated by Shinta Fujimoto.
It was serialized between April 2010 and October 2013 in the magazine Monthly Shōnen Gangan and has been compiled into nine volumes.
The big cities have become the theater of a war opposing two mafia currents: the first, traditional, tries to restore stability in its districts and to protect the inhabitants while the second, new, uses "force" only in their own interests.
Hoping to suppress this escalation of violence, the government set up a special organization, Red Raven.
In order to apply their death sentences, they employ extraordinary fighters, reputed to be ruthless.