Following Natsuki Enomoto’s confession rehearsals with Yuu Setoguchi, their youthful siblings Kotarou and Hina battle to admit their very own love. Regardless of a disastrous first assembly in center faculty along with her upperclassman Koyuki Ayase, Hina’s coronary heart is captured by his heat smile. Initially confused by these newfound emotions, Hina quickly realizes that she has fallen in love for the very first time. Chasing after her brother Yuu and her crush Koyuki, Hina additionally enrolls in Sakuragaoka Excessive Faculty; however the threads of affection are far-reaching, and so they entangle Hina and her mates. Boisterous however delicate, Hina hopes to admit her emotions to the tender-hearted Koyuki. In the meantime, Kotarou, oblivious to his personal emotions for her, is set to at all times hold Hina smiling. This film follows Hina, Kotarou, and Koyuki in highschool. Their youthful love forges new relationships, but additionally threatens to interrupt others.