On Hatsune Island, the cherry blossom trees remain in bloom all year round. A heartwarming love story was all set to begin on this island, but tragedy struck as Asakura Jun'ichi lost his dearly beloved sister, Asakura Nemu.
Jun'ichi has fallen into despair, much to the dismay of Shirakawa Kotori, who has been concerned for him during this crisis. Although the pair are growing close, they've been unable to take the final steps towards each other. Jun'ichi believes his devotion to Nemu is preventing him from acting as he tries desperately to move on.
