An OVA episode was bundled together with the Diabolik Lovers: Dark Fate game and released on February 28, 2015. The DVD contained several mini dramas depicting events that occurred to the Sakamaki's off-screen during the anime. The second opening is 'Kindan no 666' by Ryōhei Kimura and Daisuke Kishio. The opening theme is 'Mr.SADISTIC NIGHT' by Hikaru Midorikawa and Kōsuke Toriumi while the ending theme is 'Nightmare' by Yuki Hayashi. It was subsequently licensed by Sentai Filmworks and was released with an English dub and subtitles by the company on a 2-disc DVD volume set on December 2, 2014. Crunchyroll also picked the adaptation up for streaming in territories including the United States and Canada. It aired on AT-X along with online streaming on Niconico between September 16 and December 9, 2013. During the 'Otomate Party 2013' event later that year, it was announced that the adaptation would be directed by Atsushi Matsumoto and produced by the Zexcs studio. An anime adaptation was first announced at a 2013 event called the 'Rejet Fes 2013 Viva La Revolution'. Diabolik Lovers is a Japanese anime series based on the video game of the same name.