Since entering high school, Kotoko Aihara has long wanted to be in the same class as Naoki Irie, the school’s brightest student. Kotoko, who ranks among the least academically inclined, has not yet achieved that goal even in her third year. One day her home is destroyed, and the only place left for her to go is Irie’s house. Now that she lives next to him, will their relationship remain the same or grow into something greater?