Hana Ichinose enters her new life as a high school student at the Hoshio Private Academy, feeling very self-conscious since none of her former schoolfriends are attending this school. After her homeroom teacher announces that it is her birthday, however, Hana is quickly befriended by her new classmates; Eiko Tokura, Kamuri Sengoku and Tamate Momochi, who each give her small road safety charms as an impromptu birthday present. The four of them spend the afternoon going out together, leaving Hana elated with the prospect of having made some new friends after all, despite having to hide that she is actually a year older than everyone else.