GJ Club is a Japanese light novel series written by Shin Araki and illustrated by Aruya. Shinomiya Kyōya is forced to become a new member of the GJ-bu (lit. GJ Club), an unidentified club that dwells in a room of the former building of a certain school. There he meets four girls: Mao, Megumi, Shion and Kirara. Time flies with these unique girls around. The series follows the everyday, though unusual, antics of this band of friends.