Role: Vocals & Guitar Somewhat airheaded and hard to pin down, but possesses overwhelming singing talent and musical genius. He carries deep emotional trauma. He is in a band with Uenoyama, Nakayama, and Kaji. He is Ritsuka's boyfriend.

Role: Guitar A pro-level guitarist who was losing his passion for music until he heard Mafuyu's voice, which shocked him into recruiting Mafuyu for the band. He is blunt but very kind at heart. He is in a band with Sato, Nakayama, and Kaji. He is Mafuyu's boyfriend.

Role: Bass & Leader The oldest member of the band, a university student who acts as the group's mediator. He has a bright and friendly personality, but has secretly harbored feelings for Akihiko for years. He is in a band with Sato, Uenoyama, and Kaji.

Role: Drums A university student with a sexy aura who is very popular with women. He has experience with the violin and is well-versed in music theory. He struggles with his complex relationship with his roommate, Ugetsu. He occasionally teases Nakayama when he's interested. He is in a band with Sato, Uenoyama, and Nakayama.

Mafuyu's childhood friend and the bassist/vocalist of another band. He used to be in a band with Yoshida and Yagi. He is currently in a band with Yagi.

A world-class violinist and Akihiko's roommate and ex-boyfriend. While he recognizes Akihiko's musical talent, they share a complex, mutually dependent relationship.

A childhood friend of Mafuyu and Hiiragi, and the drummer for the band "syh." He has long harbored secret feelings for Hiiragi and occasionally teases him. He used to be in a band with Yoshida and Hiiragi. He is currently in a band with Hiiragi.

Mafuyu's childhood friend and ex-boyfriend. He passed away due to a certain incident in the past. He is the person who left a deep scar on Mafuyu's heart. He used to be in a band with Yagi and Hiiragi.