The Maihou Music Competition has started and Kousei is starting to feel his fears catching up with him. At the same time some old rivals have appeared and are set on competing with Kousei.

Kousei's concerns for Kaori temporarily subside as he runs into her on the street and they go shopping. Nagi can't take the harsh criticism she receives with Kousei as her piano teacher.

The OVA focuses on Kousei, Emi, and Takeshi when they were younger, showing their troubles during their competitions and the beginning of their rivalry.