 Three volumes of a four panel, comic strip manga of "Futari no Elder" were published by Enterbrain between September 26, 2010 and January 29, 2011.Two comic anthologies were released by Ichijinsha between October 25 and November 25, 2010.An Internet radio show to promote the anime series was broadcast between October 5, 2006 and March 27, 2008 called the .