Maison book girl

 is a Japanese idol group formed in 2014 by former BiS member Koshouji Megumi. Their name is sometimes abbreviated as Bukuga (ブクガ) or MBG.

Current Members

 * Yagawa Aoi (矢川葵)
 * Inoue Yui (井上唯)
 * Wada Rin (和田輪)
 * Koshouji Megumi (コショージメグミ)

Former Members

 * Munemoto Kaori (宗本花音里)

Singles

 * [2015.03.14] black
 * [2015.03.14] white
 * [2016.11.30] river (cloudy irony)
 * [2017.06.19] 412
 * [201712.13] cotoeri

EP

 * [2016.03.30] summer continue

Albums

 * [2015.09.23] bath room
 * [2017.04.05] image (Maison book girl)