Darker than Black: Kuro no Keiyakusha Gaiden
English title: Darker Than Black: Gemini of the Meteor OVAs
Japanese title: Darker than BLACK -黒の契約者 外伝
Alternative titles: Darker than Black: Ryuusei no Gemini Specials, Darker than BLACK 2 OVA, DTB, Darker than Black: Ryuusei no Gemini Episode 12
Type: Special
Source: Original
Episodes: 4
Status: Finished Airing
Aired: Jan 27, 2010 to Jul 21, 2010
Duration: 24 min per ep
Rating: R - 17+ (violence & profanity)
Studios: Bones
Producers: Square Enix
Licensors: Funimation
Genres: Action, Mystery
Themes: Super Power

Fleeing from the consequences of his decision at the Hell's Gate, superpowered Contractor Hei and his companion Yin take refuge in a quiet inn, adopting the guise of a married couple in order to not draw suspicion. In an attempt to recover from recent events, Hei befriends the inn's other guests. He discovers that one of them is a fellow Contractor tasked with killing him. Their resulting encounter spells disaster for both Hei and Yin, who are forced to fight for their lives and grapple with the emotional wounds sustained in their previous life together.

[Written by MAL Rewrite]