Kosei's road back to playing the piano has been rough, but he's finally beginning to regain his confidence, even though he still has trouble hearing the notes. But as his first solo competition in years closes in, Kosei will have to deal with reentering a cutthroat world, where old rivals still remember--and resent--Kosei's younger self, the precocious Human Metronome. Kaori's support is unwavering, but will it be enough to push Kosei through all the toxic memories this experience dredges up?