It centers on second-year high school student and aspiring musician Aoi Aioi, her older sister Akane Aioi, Akane’s ex-boyfriend and struggling guitarist Shinnosuke Kanomura, and Shinno — who is actually Shinnosuke from 13 years ago after traveling from the past to the present.
At the same time, Shinnosuke returns to Aoi and Akane’s town after a long time away.
The limited edition versions come with a booklet, a bonus CD with music, the film itself being a director’s cut, as well as an audio commentary.