Kousei is a prodigy pianist and was the youngest pianist to win the Saki Competition but quit playing after the death of his mother resulted in his inability to hear the sounds of his own playing. Following the death of his mother, he lived two years without playing the piano and saw the world through monotone colors, but this changed after meeting Kaori Miyazono, a beautiful young musician who pushed Kousei to his limits in an attempt to get his fingers back onto the piano keys.
(Source: Shigatsu wa Kimi no Uso Wikia)
