The franchise originated as a doujinshi (self-published) series by artist . Due to its massive popularity, it has since been adapted into multiple formats:
The relationship deepens as the girls start visiting more frequently. The "gyaru" trio begins to realize their shared interest in Imaizumi, leading to various group activities and a shift in the household dynamic.
The story centers on , a regular high schooler who lives alone after his parents kicked him out to help him become more independent. His quiet life is interrupted when three popular girls from his school— Reina Hamazaki, Ruri Kurumizaka, and Yukina Sasaki —discover his living situation and decide to make his home their personal hangout.