- Horikita plays the protagonist Ashiya Mizuki, a Japanese girl in the U.S. who one day sees the young athlete Sano Izumi (Oguri) compete in the high jump on television. Due to an accident inwhich she was involved, Sano loses his ability to jump. Unable to bear the guilt of causing his smile to fade, Mizuki decides to follow him to Japan and find a way to make him jump again. However, a certain problem pops up... Sano attends an all-boys private school, and the only way to get near him would be to enrole as a student there!
The special will take place half a year after the series' end. With Osaka Gakuen getting ready for an upcoming Valentine's Day event, Sano and Nakatsu reflect on the final week of their last summer vacation, which falls into the timeline of the original series between episodes 7 and 8. The special also includes a graduation scene and addresses the relationship between Mizuki and Sano.