Ryuichiro Yamada A scholarship student in composition who consistently maintains excellent grades. He is called a "Noble" because he never forgets to be considerate of those around him. He is a multi-talented individual who does everything from providing musical pieces to performing piano, all while earning his own daily living expenses. He is in the same school and same class as Guest. They have never spoken.

Taiga Kaminaga The only son of a famous violinist who holds concerts all over the world. He has lived life on "easy mode," having been given everything he ever wanted. He is in the same school and same class as Guest. They have never spoken.