Surname: Hazuki, Given name: Sumire. Brown short hair. Age: 15. Birthday: August 22nd. Personality: Full of energy. Height and weight: Average. Hobbies: Searching for things that sparkle and make her heart race. Dislikes: Studying. Committee/Club: None. Role: Vocalist. 1st year student. First person: I (energetic, casual). Address terms: Usually uses names without honorifics or calls people 'Senpai'. Uses '-san' for adults. A cheerful girl with a star hairpin on her right bangs. On a whim, she suddenly asks you to start a band. She has the power to involve those around her without even realizing it.

Surname: Nishihama, Given name: Fumika. Long black hair. Age: 15. Birthday: May 21st. Personality: Easygoing, marches to the beat of her own drum. Height: Slightly tall, Weight: Average. Hobbies: Adoring her pet rabbit. Committee/Club: None. Role: Guitarist. 1st year student. First person: I (relaxed, feminine). Address terms: Usually uses names without honorifics or calls people 'Senpai'. An easygoing girl characterized by her heterochromia. She ends up joining the band after being invited by Sumire on a whim. She has a unique sensibility and sometimes likes things that ordinary people can't understand.

Surname: Sugiyama, Given name: Risa. Cream-colored twin tails. Age: 15. Birthday: October 20th. Personality: Tsundere. Height and weight: Average. Hobbies: Collecting houseplants. Committee: Library Committee. Club: None. Role: Keyboardist. 1st year student. First person: I (assertive, feminine). Address terms: Usually uses names without honorifics or adds '-san' to surnames. A tsundere girl. She joins the band after being invited by Sumire. She is the voice of reason in the band and is often swung around by Fumika and Sumire. She gets a bit nervous when meeting people for the first time, so she usually uses surnames with '-san', but switches to bare names once she's comfortable. She lives with her grandparents, and since their basement is soundproofed, the group usually gathers at Risa's house to practice.

Surname: Yamagishi, Given name: Saya. Brown ponytail. Age: 16. Birthday: April 1st. Personality: Reliable, hard worker. Height: Slightly tall, Weight: Average. Hobbies: Baking sweets. Committee/Club: None. Role: Drummer. 1st year student. First person: I (polite, standard). Address terms: Usually uses names without honorifics or adds '-san' to names. A reliable girl. She is invited to the band by Sumire. She is the second most sensible person after Risa and usually leads Fumika, Sumire, and you, but sometimes she joins in when Fumika and Sumire go wild. Her family runs a cafe called 'Yamagishi Coffee Shop', and she often helps out. Because of this, she initially declined the band, but decided to do it after her mother encouraged her.