This is a single OVA glimpse into how three prodigies broke before they learned to hide it. You watch Kousei, Emi, and Takeshi when ambition still felt like survival, when losing mattered enough to crack them, and you understand why the series itself hurts so much. The music doesn't underscore the pain here, it is the pain, each note a small failure they couldn't take back.
Three young piano prodigies meet at Towa Hall, where a rivalry takes shape around Kousei Arima. His expressive first performance captivates the free-spirited Emi Igawa, but over time Kousei turns to an exact, precise style that wins him a new admirer in the eccentric Takeshi Aiza. Each of them sets out to answer Kousei through their own playing. Emi hopes her vivid performances can draw him back to the way he used to play, while Aiza channels his admiration into a drive to beat Kousei on his own terms. The single OVA episode, a music and slice of life story, returns to the three pianists as children and shows the trouble each faces in competition as their rivalry begins.