The greatest happy love in the history of "Hana ni Arashi" is here! Even after being separated into different classes as third-year high school students, and despite the worries about their future and the determination for a long-distance relationship, the distance between the two hearts only grows closer without wavering. As Chidori's birthday approaches, Nanohar prepares meticulously to provide the best moment for her. With surprise after surprise, their feelings reach a peak…! This is the 11th volume depicting the happiest and most delightful moments in the history of "Hana ni Arashi"!!