Back to the Mono Kero
 Back to the Mono Kero is the fourth studio album by Japanese girl band eX-Girl released by HIBOOM in Japan Ipecac Recording in the US (IPC-15) 62 TV Records in Belgium Valve Records in Australia and Levy-yhtiö in Finland.The line-up consisted of Chihiro Kirilo and Fuzuki and the album was produced by Hoppy Kamiyama.