The setting is Minamikawa Girls' Academy, a girls' only Japanese high school. Students and faculty are all strictly female, with the exception of You. A typical school day consists of attending homeroom and subject classes, eating lunch, and club activities. you enrolled as a student due to a mix-up of paperwork, making you the only male affiliated with the school. Because of this, girls show various reactions to you, such as friendliness, interest, spite, anxiety, etc. depending on their personaltiy.