Raya Tochikura, a regular 14 year old girl on the outside, but really, she is one of the best pianists known to man. They call her the "Human Metronome." With her mothers help, Kanade Tochikura, she has been shaped into a slave to the instrument. After her late-mothers death, she has become Tone Deaf. She has paranoia, and ADD, but toughs through it. She can't hear the notes she plays anymore, but one day, she meets a violinist and her whole world changes. Her world is filled with music.