A grand piano stands silently in a tatami room at Naoko Nakashima's home in Toride, Ibaraki Prefecture. It has not been played in almost two years.

Nakashima's grandmother gave the piano to her when she was 5 years old and she practiced every day in a bid to become a professional pianist.

But in November 2015, just before she was supposed to start a high school specializing in music, Nakashima took her own life. She was 15 years old.