Kazuki is an outgoing person and is extremely friendly to others. He has little sense of social boundary. During his time in middle school, he was in the track team but pulled out to play the trumpet in the school band.Kazuki has an enormous appetite, as he is constantly eating. He quickly befriends Kahoko. Because of him, Kahoko learned the true meaning of music, that it is enjoyed by everyone.After that Kahoko began to love and enjoy music better.
Source from Wikipeida