Darker than BLACK: Origin, DARKER THAN BLACK: Kuro no Keiyakusha - Gaiden, Darker than Black: Origins, DARKER THAN BLACK -黒の契約者- 外伝, Default, Darker than Black: Kuro no Keiyakusha Gaiden, Synonym, Darker than Black: Ryuusei no Gemini Specials, Darker than BLACK 2 OVA, DTB, Darker than Black: Ryuusei no Gemini Episode 12, Japanese, Darker than BLACK -黒の契約者 外伝, English, Darker Than Black: Gemini of the Meteor OVAs