Darker than Black: Kuro no Keiyakusha Gaiden
Watch Darker than Black: Kuro no Keiyakusha Gaiden full episodes online English sub. Other tiles Synonyms: Darker than Black: Ryuusei no Gemini Specials, Darker than BLACK 2 OVA, DTB, Darker than Black: Ryuusei no Gemini Episode 12. Synopsis: Tells the story of what happened to Yin and Hei between the first and second series.
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