Fish Story (2009) - Yoshihiro Nakamura

In the year 2012 a comet approaches earth, threatening to end civilization when it impacts. On the streets of Japan, a single music store remains open, its proprietor insisting to his customers that the world is not coming to an end. He plays a forgotten song recorded by an obscure band 37 years ago, and insists that somehow, this song will save the world. A series of short stories spans the years from the recording of the song in 1975 to the modern day, and shows how--in roundabout fashion--the man in the music store is absolutely right.