With an inexplicable pull, Kyouya Shinomiya yearns to become a part of the enigmatic GJ Club. Upon reaching their meeting place, an abandoned classroom, Kyouya introduces himself to the club's leader, Mao, who may be small in stature but possesses an indomitable spirit. Kyouya also crosses paths with Mao's younger sister, Megumi, whose demeanor oscillates between celestial and unpredictable. The club's other members include Shion, a cerebral savant lacking practical abilities, and Kirara, a shrouded and insatiable figure. As Kyouya immerses himself in the company of these idiosyncratic women, time seems to slip away.