Suzu Mizuochi enters Hoshigaoka High School, a prestigious preparatory school she had longed to attend, but she becomes depressed because she can't keep up with the high level of the students around her. Despite her earnest efforts to study hard, she ranks 238th out of 239 students in the final exam. At that time, she befriends Kiyoto Ihara, the lowest-ranked student whom she meets during a remedial class. Suzu, who is conservative in everything, is attracted to Kiyoto's freedom...