Sora no aosa o shiru hito yo

In Chichibu, 18-year-old Shinnosuke Kanamuro (voiced by Ryo Yoshizawa) is an aspiring guitarist who is dating Akane Aioi. Thirteen years later, Aoi (voiced by Shion Wakayama) discovers that Shinnosuke is now a grown man who appears to be a living ghost, still trapped in a hall. Aoi and her sister Akane (voiced by Riho Yoshioka) are forced to help Shinnosuke's current band, and they soon realize that Shinnosuke's spirit is determined to bring Akane and Shinnosuke together, believing that doing so will return him to his physical body.