Mayuki, a junior high pupil, longs to attend Ootomo High School with her admired upperclassman Akira. Unfortunately, her unsatisfactory grades make it appear improbable for her to enroll in such a prestigious institution. To aid her daughter in achieving her aspirations, Mayuki's mother employs Rin, a high schooler, as her exclusive mentor. Fascinated by Rin's sophisticated demeanor, Mayuki expresses her curiosity and requests more than just academic guidance.