Darker than Black: Kuro no Keiyakusha (ＤＡＲＫＥＲ ＴＨＡＮ ＢＬＡＣＫ－黒の契約者－, Dākā Zan Burakku -Kuro no Keiyakusha-?, literally "Darker than Black -The Black Contractor-") is an anime television series produced by Tensai Okamura and Bones. It premiered across Japan from April 5, 2007 on MBS, TBS, and its affiliated broadcast stations, with its satellite television premiere in Japan on Animax in May 2007. The music for the series is composed by Yoko Kanno. The series has also been adapted into a manga series, which is serialized in Monthly Asuka. The anime also was awarded Best Original Anime of The Year by GoGoplex, a popular magazine for teens.