I'm Arima Kousei. I'm what they say, depressed. When I was young, my mother used to teach me how to play the piano. She was very sweet but then 'that' happened. An incident I can never forget. She became too sick and had to use a wheelchair. After that, she started abusing and hitting me. I played the piano correctly, like a robot. This is why people used to call me 'human metronome' or my 'mother's puppet'. I felt like it was just me and my mom against the world. One day, when I was playing the piano in the middle of a competition, the music starting fading away. Soon I couldn't hear what I was playing so I stopped and started crying. After that, my...