A decent but pretty standard drama from Nobuhiro Yamashita. Japanese music-based dramas generally aren't the most original ones, and Yamashita does little to bend that tradition. While his qualities do surface from time to time, there's not quite enough here to set itself apart from the many films that came before.
A man wakes up all battered, no memories of his former self. He wanders around until a sees a band performing on stage. He climbs up there, grabs a mic and starts singing. The crowds love him, but band manager Kasumi doesn't really know what to do with the guy. She takes pity on him and lets him stay at her house for the time being.
Nikaido and Shibutani put in solid performances, there are some small dramatic moments that stand out and the finale is on point, other than that though the music bits aren't that great, the story shoots off in different directions and the film fails to make a real mark. A somewhat inconspicuous entry in Yamashita oeuvre.