Your Lie In April 11 by Arakawa Naoshi
Kosei Arima was a piano prodigy until his cruel taskmaster of a mother died suddenly changing his life forever. Driven by his pain to abandon piano Kosei now lives in a monotonous colourless world. Having resigned himself to a bland life he is surprised when he meets Kaori Miyazono a violinist with an unorthodox style. Can she bring Kosei back to music and back to life?