Shinomiya Kyouya is forced to become a new member of the GJ, an unidentified club that duels in a room of the former building of a certain school. Here he meets the club leader, Mao, a short girl with a big attitude; Mao's younger sister, Megumi, who has the heart of a bipolar angel; the recognized genius with a lack of common sense, Shion; and the always-hungry and mysterious Kirara. Time flies with these unique girls around.
Shinomiya Kasumi launches an undefined activity club, "Good Job Club" in her junior high school, imitating the same club from her brother's high school. In a small club room, she enjoys her school life with Seira, a sharp tongue beautiful girl, and Geraldine, a girl from Canada who communicates using a white board.

