Houki Shinonono (篠ノ之 箒, Shinonono Houki) is a 1st year student at the IS Academy in Class One and the 1st childhood friend of Ichika Orimura. She is the 1st heroine to be introduced in the Infinite Stratos series.

IS (Japanese: IS〈インフィニット・ストラトス〉 Hepburn: IS ) is a Japanese light novel series by Izuru Yumizuru with illustrations provided by Okiura and CHOCO. As of October 2013, 8 volumes have been published by Media Factory under their MF Bunko J label. From volume 8 onwards, the novels will be published by Overlap under their Overlap Bunko label. A manga adaptation by Kenji Akahoshi was serialized in the seinen manga magazine Monthly Comic Alive from May 2010 to July 2012 with five volumes published under their Alive Comics imprint. A 12-episode anime adaptation aired in Japan between January and March, 2011, and an OVA was released on December 7, 2011. The anime is licensed by Sentai Filmworks in North America, and they released the series on April 10, 2012. A second series aired from October 3, 2013 to December 19, 2013.