Between the White Keys and the Black Keys

In the late Showa era, a young pianist played in karaoke bars in Ginza, Japan, while searching for the true meaning of jazz. Encouraged by a mysterious gang member, Bo plays the theme song "Love Theme" from the movie "The Godfather". Unexpectedly, this song has a well-known taboo: the leader of the gang that rules the underground world of Ginza only allows his favorite pianist Nan to play this song. The performance of a piece of music unexpectedly implicated the fate of two pianists, and also unveiled the mystery of Ginza night.