Oninagi (Japanese: オニナギ) is a Japanese manga written by Akira Ishida. It was originally published in Japan in 2007 by Houbunsha. It was announced at Yen Press' Comic-Con International panel in July 2008 that they acquired Oninagi for release in North America. The first volume was translated and published in April 2009. Akira Ishida is not to be confused with the voice actor of the same name.