After two years, Kōsei has not played the piano and he sees the world in monochrome. He keeps living his life with his friends Tsubaki and Watari. He meets Kaori Miyazono, a fourteen-year-old violinist that plays very freely. Kaori helps Kōsei play music again. Kōsei knows that he loves her, but she already likes Watari. Kaori forces Kōsei to do a performance with her. Kaori suddenly collapses after the performance and was sent to the hospital. Kaori tells Kōsei that she is anemic but this is a lie. She had collapsed many times before when she was younger.