Comic Flapper
A manga adaptation illustrated by Nobuhiko Yanai began serialization in the November 2011 issue of "Monthly Comic Flapper" which was released on October 5, 2011. The first "tankōbon" volume was released by Media Factory on April 23, 2012. As of September 23, 2016, ten volumes have been released. Additionally, a "yonkoma" anthology was published by Medi Factory on October 23, 2014. The manga is licensed in North America by Seven Seas Entertainment.