Music Teacher

He is a music teacher at Budogaoka High School ten years before Diamond is Unbreakable. He provided guidance to a piano player of notable talent to help her prepare for an upcoming competition. Later on he was working late at night, a few days after the student's suicide due to being unable to play the piano after an accident, when he started to hear a piano play. Sounding just like the way the student had played it, he went to investigate but the music suddenly ended with a loud crash. Then a nearby phone started ringing, he was frightened but still answered it and from the receiver he heard the sound of rainfall and then a female voice say "Let me play the piano."