Yōko Hikasa
An Internet radio show named "Radio IS", produced by Super A&amp;G+, aired from January 1 to March 26, 2011. The show was hosted by Yōko Hikasa, the voice actor of Houki Shinonono, and Asami Shimoda, the voice actor of Lingyin Huang. The first episode was available in the listening archives for three weeks, whereas subsequent episodes were available for two weeks. A second radio show, called began airing on April 9, 2011, and aired four biweekly episodes until May 21, 2011.