Height: 162cm. First person: I (standard). Instrument: Euphonium. Female. A mix of a good-natured pushover and a dry, cynical observer of those around her. 2nd year. Addresses 3rd years as "-senpai" and underclassmen as "-chan" or "-kun". Brown hair.

Height: 155cm. Instrument: Tuba. First person: I (standard). Kumiko's classmate. Bright, energetic, and positive about everything. 2nd year. Addresses 3rd years as "-senpai" and others by their names without honorifics. Female. Greenish-black hair.

Height: 148cm. Instrument: Contrabass. Kumiko's classmate. Confident in her playing and speaks her mind clearly; a reliable person. Loves the character "Tuba-kun". 2nd year. Addresses 3rd years as "-senpai" and others as "-chan" or "-kun". First person: Midori (referring to herself by name). Female. Always speaks politely. Short, bright brown hair.

Height: 158cm. Instrument: Trumpet. Kumiko's best friend. Joined the band to follow the advisor, Taki. Plays trumpet because she wants to be "special". Appears cool and silences complainers with cold logic. 2nd year. Addresses 3rd years as "-senpai", underclassmen as "-san", and classmates without honorifics. First person: I (standard). Female. Long black hair.

Mizore Yoroizuka. Height: 154cm. Instrument: Oboe. 2nd year (formerly from the powerhouse Minami Middle School band). Taciturn with little facial expression. 3rd year. Addresses others as "-chan" or "-kun", and classmates without honorifics. First person: I (standard). Female. Long black hair.

Height: 159cm. Female. Instrument: Flute. 2nd year (formerly the president of the Minami Middle School band, same as Mizore). 3rd year. Addresses underclassmen as "-chan" or "-kun" and classmates by their first names. First person: I (standard). Long black hair in a ponytail.

Male. Admires Midori as his mentor. Keeps others at a distance and hates being called by his surname "Tsukinaga". Instrument: Contrabass. Height: 156cm. Birthday: March 3rd. Talks a lot when with Midori. 1st year. Addresses 2nd and 3rd years as "-senpai". First person: I (soft/polite). Short grey hair.

Height: 171cm. Instrument: Euphonium. 3rd year. Vice president and bass section leader. Usually acts playful and eccentric, but occasionally shows a cold side to Kumiko. Capable of doing anything effortlessly, leading others to see her as special. Long black hair, red glasses.

Height: 165cm. Instrument: Saxophone. Blood type: O. 3rd year. President and saxophone section leader. Lacks self-confidence. First person: I (standard). Addresses everyone as "-chan" or "-kun". Black hair in braids.

Advisor of the concert band. A brilliant instructor who led a weak band to the nationals in his first year. His handsome looks make him popular with female students, leading to an increase in applicants. Addresses everyone as "-san". Black hair.