Ogre Slayer (Japanese: 鬼切丸, Hepburn: Onikirimaru) is a manga series written and illustrated by Kei Kusunoki. The manga has been adapted into a four-episode original video animation (OVA) anime. Both the manga and anime were distributed in North America by Viz Media, though only two volumes of the manga were released. On July 11, 2013, plans for a follow-up manga were announced.