After losing his musical partner Kai in an accident just before their major debut, Kyousuke has distanced himself from music and lives without motivation. Three years later, Kai suddenly appears before Kyousuke, unchanged and as outspoken as ever. "Being alive but doing nothing... that's no different from being dead." Encouraged by Kai's words, Kyousuke returns to the world of music, rediscovering the joy of creating sound together. But their time together cannot last forever...

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