Emma Sakuraba A positive and energetic girl. She is compassionate but lonely and starved for human warmth. She is extremely afraid of being disliked by others.

Hiro Nikaido An academically excellent, flawless girl. A serious and polite "Yamato Nadeshiko" type, but she tends to have an overbearing sense of justice. She shows no mercy toward things that are "not right." She does not use polite speech.

Sherry Tachibana A self-proclaimed great detective. She has a cheerful, uninhibited personality and jumps into anything fun without hesitation. She displays intense curiosity toward things that interest her. However, she possesses no sense of morality.

Noah Jogasaki A street artist. She is aloof and always carries a floaty, ethereal atmosphere. Her art is popular worldwide, but no one has ever known that she is the creator.

Hanna Tono A girl who speaks with an aristocratic flair. She maintains a haughty, otherworldly demeanor. She claims to be the daughter of a prestigious family, but in reality, she comes from a very poor household.

Margo Hosho A swindler. She treats everyone in a friendly and favorable manner. Since she doesn't actually trust anyone, she never takes anything seriously and always behaves with calm composure.

An-An Natsume A shut-in girl. She rarely speaks and communicates through writing in a sketchbook. When writing, she refers to herself as "Wagahai" (pompous/archaic I).

Nanoka Kurobe A girl who burns with strong hostility toward the prison. She is tight-lipped and often has a dismissive attitude toward others. She knows more about the prison's rules and structure than the other inmates, but she prefers acting alone over cooperating.

Coco Sawatari A streamer. While she is positive and bright during her broadcasts, her true nature is incredibly sharp-tongued with extreme mood swings. She hates everything in the world except herself and her "Oshi" (idols).

Meruru Hikami An extremely timid and anxious girl. She is sensitive to the feelings of others and watches them while hiding in the shadows. She is very negative about herself. She is always on the verge of tears and cries easily.