A group of youthful friends are set to bid farewell to one of their own in the peaceful small hamlet of Sakuranomori. Sana Hidaka must relocate from his tranquil childhood home to the bustling city of Tokyo due to his parents' business goals. Though it is difficult for him, he must bid farewell to his dear pals, Aoi Oribe, the feisty Wakatsuki twins, Shuri and Shuusuke, and the cheery and energetic Nanaka Yatsushiro. But, despite his reluctance to leave them behind, he feels that no matter how far away they are, the memories of their relationship will live on. Sana, now a 16-year-old high school student, returns to his hometown in the hopes of resuming his previous life.