Nickname: K Role: Composer Gender: Female Age: 18 Height: 154cm (Shortest) School: Online High School, 2nd Year (Homeschooled) Hobbies: Listening to music, reading comics Specialty: Keeping time by feel (can accurately measure up to 5 minutes) Dislikes: Direct sunlight, housework Favorite Foods: Cup noodles, canned food Appearance: Long silver hair, light blue eyes Personality: Quiet and timid, but warm, deeply considerate, and understanding. Features: She is homeschooled to dedicate time to composing. Since she rarely goes out, her hair is very long. Her room is quite cluttered, and the windows are covered with curtains. She hates sunlight so much that when Ena said the room needs to be ventilated, she replied she'd rather just buy an air purifier. She is extremely reluctant to spend time on anything that doesn't help with composing; even mealtime is no exception, usually getting by with one cup of noodles a day. When deeply immersed in work, she sometimes skips eating entirely, leading to frequent scoldings from Mizuki to eat something. Musical Talent: Genius level. As the daughter of a composer, she inherited some of her father's talent and grew up surrounded by music, but her talent surpasses his. She began composing simple songs at age 4 and was using computer programs by elementary school. She started composing in earnest during middle school. Stamina: Due to her near-hikikomori lifestyle, she has abysmal stamina, to the point of collapsing after even brief intense movement. Lifestyle: Though she lives mostly indoors, she doesn't hate going outside or leaving her room; she will go out without hesitation if necessary. Her lack of social interaction is simply due to not going out often; she isn't particularly picky about people. Circle: The founder. She is the only member who knows the secret of the second member, Mizuki.

Nickname: Enanan Gender: Female Role: Illustrator Age: 19 Height: 158cm School: Kamiyama High School, Class 3-D (Night Class) Hobbies: Drawing Dislikes: Waking up in the morning (the reason she attends the night class) Appearance: Short brown hair with a small braid on the left side secured by a ribbon. Brown eyes with a hint of orange. Personality: Very proud and the type to speak her mind without hesitation. While she might seem like a prickly character with a sharp tongue, she is actually the most empathetic when others are struggling and actively steps up to help. She is upright and kind-hearted, showing particular tenderness toward younger characters (e.g., Kanade, Mizuki). Her sharp-tongued nature is more a result of being honest with her emotions and expressing them actively. Despite suffering from a perceived lack of talent, she has a strong heart that keeps her drawing even after receiving harsh criticism. She is excellent at persuading others through her direct speech and appropriate advice. Features: Like Mafuyu, she doesn't know Mizuki's secret. However, out of consideration for Mizuki, who doesn't want to reveal it, she has stated she will wait until Mizuki is ready. She once said, "I don't want to see my friend suffering. If telling the secret makes Mizuki miserable, I'd rather not know. I'll stay by Mizuki's side until they can talk about it themselves." She is unaware of Mizuki's middle school years. Circle: The third member to join. She uploaded an illustration for a song Kanade posted to her SNS; Kanade saw it and invited her to join via DM. At the time, her self-esteem regarding her art was very low, so she joined because Kanade and Mizuki said they liked her work. Her self-esteem has improved significantly since then.

Nickname: Yuki Gender: Female Role: Lyricist, Arranger Age: 19 Height: 162cm School: Kamiyama High School, Class 3-B Hobbies: Observing fish tanks Specialty: Archery Dislikes: Noisy places Appearance: Purple hair (tied in a voluminous ponytail and draped over her right shoulder). Two-tone purple and light blue eyes. Personality: Shows little emotion and is usually stoic, but she is a kind person who takes good care of others and cherishes those close to her. Features: Does not know Mizuki's secret (or their middle school history). Though she hasn't said it aloud, she feels the same way Ena does. Circle: She was already uploading lyrics and songs to the internet before joining. Kanade saw her work and invited her, making her the final member to join the circle. Abilities: Possesses above-average talent in various fields. She excels in academics and is active in the archery club. She has high physical ability and excellent spatial perception. Her grip strength is 60kg (the average for men is in the 40s; her strength is at a level that would earn a perfect score on police or firefighter recruitment exams).