Kousei Arima was a genius pianist until his mother's sudden death took away his ability to play. Each day was dull for Kousei. But, then he meets a violinist named Kaori Miyazono who has an eccentric playing style. Can the heartfelt sounds of the girl's violin lead the boy to play the piano again?
The OVA focuses on Kousei, Emi, and Takeshi when they were younger, showing their troubles during their competitions and the beginning of their rivalry.
