Rent Darker Than Black: Vol.3 and 4 (2007)

A new and deadly breed of covert agent walks the streets. Known as Contractors, these assassins and spies wield bizarre supernatural powers to carry out the dirty work of others. One among these operatives is more mysterious than the rest - The masked killer BK201, the Black Reaper. But he doesn't work alone. As one part of a motley crew controlled by a clandestine syndicate, the Black Reaper goes where he's told - That is, until he chooses not to. Alliances are always shaky at best in this new world of espionage, and loyalty is never guaranteed in the madness unleashed by Hell's Gate. Pain, however, is a promise.