Karada Iokawa and Shoko Nogami must face more troublesome problems than dealing with the ex‑girlfriend of Karada’s older brother or the younger sister of his ex‑boyfriend. When a magic wishing stone grants Karada’s wish to become older, it does so by stealing years from Shoko. As a result, Shoko, who has already graduated and studied abroad, now matches Karada’s age and is about to start junior high school, while Karada suddenly has to confront the realities of adulthood. The situation becomes even more awkward as they must also navigate their existing romantic interests.