Darker than Black DARKER THAN BLACK -黒の契約者- (Dākā Zan Burakku -Kuro no Keiyakusha)

Alternative Name: DARKER THAN BLACK -黑之契約者-

                                       (DARKER THAN BLACK -Hēi Zhī Qì Yuē Zhě-)

Genre: Sci-Fi, Neo-noir, Supernatural, Action, Drama, Mystery, 

               Psychological, Assassins, Conspiracy, Crimes, Fighting, 
               Polices/Detectives, Superhuman, Superpowers, Adventure,
               Gunslingers, Twins, Post-Apocalyptic

Description: 

In Tokyo, an impenetrable field known as "Hell's Gate" appeared ten years ago. At the same time, psychics who wield paranormal powers at the cost of their conscience also emerged. Hei is one of the most powerful of these psychic agents, and along with his blind associate, Yin, works for one of the many rival agencies vying to unlock the mysteries of Hell's Gate.

Episode

Season 1: 25 episodes + 1 Special 

Season 2: 12 episodes + 4 Special

Original Run

Season 1: April 5, 2007 – September 28, 2007
Special: March 26, 2008

Season 2: October 8, 2009 – December 24, 2009
Special: January 27, 2010 – July 21, 2010

Studio: Bones