A manga adaptation illustrated by Hiroji Mishima began serialization in the July 2010 issue of Dragon Magazine, and later in Monthly Dragon Age in its March 2011 issue. The first volume was published by Fujimi Shobo on June 9, 2011, with a total of two volumes available in Japan as of December 9, 2011 under their Dragon Comics Age imprint. A spinoff manga, called High School DxD: Asia and Koneko's Secret Contracts!? (ハイスクールD×D アーシア&小猫 ヒミツのけいやく!? Haisukūru DxD: Āshia ando Koneko Himitsu no Keiyaku!??), illustrated by Hiroichi, was serialized in Monthly Dragon Age from the October 2011 issue (Released on September 9, 2011) to the April 2012 issue (Released on March 9, 2012). Serving as a side story, the manga takes place after chapter 10 of the main manga, and centers on Asia Argento's first duties as a Devil. It was later released as a tankōbon volume on March 9, 2012.