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Miku Hatsune, Luka Megurine, and Zimi Samune have always been best friends. Bathed in an orange sunset, the three girls seal their friendship with a star-shaped charm they share, promising to forever stay together. However, a tragedy soon befalls the group and tears their bond to shreds. As the world around her turns a dull monochrome, Zimi can only watch as time passes—and her friends grow further and further apart. [Written by MAL Rewrite]

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