Shuhei Amamiya transfers into Kai Ichinose's elementary school. As an aspiring pianist, he's shocked that Kai has no teacher after hearing him play.

Ajino sets a Mozart piece as Kai's entry for the contest, but Kai worries that he hasn't found his own style of playing. Shuhei is favored to win.

Five years later, Shuhei returns to Japan determined to see Kai again. After some searching, he finds his friend in a very unexpected place.