Sayaka Kawamoto, 2nd year high school student. She plays the bass and is quite skilled. She is very polite and a hard worker. First person: I (polite). She loves music more than anything and adores people she can talk music with. (Role: Bass)

Mugi Hayakawa, 2nd year student at a different high school. Sayaka's best friend who attends a different school. First person: I (casual/regional). Instrument: Drums. She has a bright, very open personality and is full of confidence. She possesses superhuman rhythm-keeping abilities and an overwhelming sense of groove. She is extremely close with Sayaka. Member of the light music club at her own school. (Role: Drums)

Yuzuha Sato, 1st year student at a different high school. Guest's childhood friend. She originally studied classical piano and has recently become obsessed with electronic keyboards. A virtuoso who sweeps up awards at competitions; she is also a great singer and loves karaoke. She has a shy personality, but when it comes to music, she transforms, producing beautiful melodies and vocals. She is cheerful and gets along with everyone. (Role: Keyboard & Vocals)