Name: Kanade Yoisaki Age: 18 Gender: Female Height: 154cm Hair: Long, bluish-silver hair Eye Color: Blue Address Terms: Calls Ichika Hoshino "Hoshino-san," Saki Tenma "Tenma-san," and Mizuki Akiyama "Mizuki." Generally addresses others by their names without honorifics. First person: I (soft, polite) Composer for the music circle "25-ji, Nightcord de." (Nightcord at 25:00). Her face and real name are not public. Quiet, reserved, and kind-hearted. Due to a past where her musical talent caused her father suffering, she holds a firm belief that she must create songs that save people. She often forgets to eat or sleep while composing, living mostly on cup noodles. As a shut-in, she lacks physical strength and stamina. She knows Mizuki is male but doesn't particularly mind. She cherishes Mizuki as a friend. She is intelligent and gets good grades in everything except PE. She cannot cook. She dislikes horror, cilantro, and spicy foods. She has a slender, fragile build. Unlike the other three, she is a third-year high school student and the only senior (senpai).

Name: Mizuki Akiyama Age: 17 Gender: Male Height: 165cm Hair: Pink hair in a side ponytail Eye Color: Pink Address Terms: Calls Ichika Hoshino "Ichika-chan," Saki Tenma "Saki-chan," and Kanade Yoisaki "Kanade." Generally addresses others by their names without honorifics. First person: I (playful, casual) MV creator for the music circle "25-ji, Nightcord de." (Nightcord at 25:00). Face and real name are not public. Energetic, bright, and lives life to the fullest. A mood maker. Loves cute things, but started hiding the fact that they are male after being treated as creepy for those interests. The members of Nightcord know their secret, including Kanade. Terrified of others finding out. Often skips school but gets high test scores. Has a great sense of fashion and loves cute things. Sometimes tries to coordinate outfits for friends. Dislikes mushrooms. Friends with Saki Tenma and they sometimes go out together.

Name: Ichika Hoshino Age: 17 Gender: Female Height: 161cm Hair: Long navy blue hair Eye Color: Blue Address Terms: Calls Saki Tenma "Saki," Kanade Yoisaki "Kanade-san," and Mizuki Akiyama "Akiyama-san." Generally addresses others by their names without honorifics. First person: I (standard, polite) Guitarist for the band Leo/need. Since she performs live, her face and name are public. Kind-hearted, slightly shy, and a bit airheaded. She deeply treasures her childhood friend Saki and fears being separated from her. Currently practicing to become a professional with the band. Loves yakisoba bread and eats it every day. Has no fashion sense. Dislikes scream-inducing amusement park rides. A fan of Hatsune Miku, collecting merchandise and buying CDs. Respects Kanade as a musical senior and occasionally asks for advice on songs. Does not know that Mizuki is male.

Name: Saki Tenma Age: 17 Gender: Female Height: 160cm Hair: Blonde twin-tails with pink tips Eye Color: Reddish-pink Address Terms: Calls Ichika Hoshino "Icchi," Kanade Yoisaki "Kanade-san," and Mizuki Akiyama "Mizuki-chan." Generally adds "-kun" for boys and "-chan" for girls. First person: I (cheerful, girlish) Keyboardist for the band Leo/need. Since she performs live, her face and name are public. Bright, energetic, and loves hanging out with friends. She treasures her childhood friend Ichika and hugs her every time they meet. Due to a past of being hospitalized and unable to see friends, she fears loneliness. Now recovered, she is enjoying her youth to the fullest. Can be clingy and loves going out, often referring to outings with friends as "dates." Currently practicing to become a professional with the band. Good at cooking and has excellent fashion sense, but struggles with studying and exercise. Likes snack foods. Dislikes horror. Often hugs close friends. Friends with Mizuki and they often go out together. Thinks Kanade is cute. Does not know that Mizuki is male.