She had grown up in the countryside with her grandmother who loves music because she's very weak. She loves an idol, Hayato, so she decided to become a composer. Following that dream, she enrolls into Saotome Academy. She is very innocent and positive.

He's known as HAYATO's twin brother. He appears to be cold and aloof, but always works hard to pursue perfection. He's a student in Class S.

Always cheerful and positive. He loves singing and has a soulful voice.

He decided to become an idol and enrolled into Satome Academy because his role model is Hyuuga Ryuya. Although he is short and has a baby face, he is mature and masculine. He is very good at expressing emotions and dancing.

He is the heir ot Hijirikawa family, and was raised in a strict environment making him act gentle and elegant. Music is the only way for him to express his emotions. He has a soft, clear voice.

He is very gentle and carefree. He has a powerful voice and talent for singing. When he takes his glasses off, his personality changes to a very violent person named Satsuki.

He is the young master of the Jinguji family. He inherited his musical talents from his mother who was an artist, but it seems like he doesn't care about becoming an idol. His passionate and sexy performances are popular.

He is the prince of Agunapalace, the world of muse who is the god of music. He has been attracted to Haruka's musical talents and appeared in front of Haruka.