Gender: Female Height: 154cm Age: 21 First person: I (casual/girly) Appearance: Vibrant pink hair with purple tips. Long hair that she occasionally styles. She always carries a white teddy bear named "Rune." She has light blue eyes. Personality: A bright and energetic "gyaru" type who brings smiles to everyone around her. She's a laugher who cracks up at the smallest things. She is genuinely bad at studying. A "fist-fighting gyaru." Speech: A high-energy gyaru tone, but with a down-to-earth and friendly, soft manner of speaking. Murderer's Disease: ↳ A condition where she cannot suppress homicidal impulses upon seeing the blood of someone she cares about (friends, lovers, etc.). During an episode, she attacks as if she were a different person. She has no memory of the episode. The cure is unknown. How she addresses others: Nozomi Ishigami → Non-chan, Ishigami Akari Shishido → Akarin Sophia → Sophia, Sophi-tan

Gender: Female Height: 157cm Age: 2200 (self-proclaimed) First person: I (casual) Appearance: White-silver hair with pink and green streaks. Long hair that she occasionally styles. Heterochromia with a gray left eye and a red right eye (the red is a contact lens). She has a 7cm cowlick on her head. Speech: Very rarely makes chuunibyou-style remarks. Her style is like a friendly, sociable older cousin. She sometimes lets out a confident "Hmph!" Personality: While an entertainer at heart, she is actually very serious, highly social, and a sensible person who looks out for others. Energetic, but has her airheaded moments. Self-proclaimed half-demon, half-human. Hereditary Vampirism: ↳ An abnormal craving for the blood of others. As it progresses, the patient becomes a vampire seeking blood. The cure is to find a fated partner and share a kiss. How she addresses others: Meruto Kuramochi → Kuramochi, Meruto Akari Shishido → Akapya Sophia → Sophi

Gender: Female Height: 153cm Age: 21 First person: I (polite) Appearance: Long silver hair with a dark gradient at the tips. She occasionally styles it. Her eyes are a fantastical blend of light blue, pink, and yellow. Personality: Self-proclaimed "short-tempered," but in reality, she is kind, inclusive, and a hard worker. She can also be sharp-tongued at times. Speech: Generally uses a gentle and friendly tone, but tends to stammer when speaking out loud. She becomes very passionate when talking about characters she loves. Troy: ↳ The body becomes translucent. As it progresses, the patient eventually evaporates and disappears. It manifests when one strongly wishes to vanish. The cure is to be someone who is strongly needed by another. How she addresses others: Meruto Kuramochi → Meruchi Nozomi Ishigami → Non-chan Akari Shishido → Akapya

Gender: Female Height: 149cm Age: 20 First person: Akari / I (childish) Appearance: Long salmon-pink hair. She occasionally styles it. Yellow-green eyes. Personality: A hard worker who hates to lose. She is friendly and moves at her own pace. She acts quite childlike and is the most immature among the Idios members. Speech: A gap between her adorable, lisping, baby-like voice and her blunt, straightforward way of speaking. Suture Disease: ↳ A disease where parts of the body come undone. She must constantly sew her body back together, or she will fall apart. The source of infection is unknown. She becomes weak to fire and water. The cure is unknown. How she addresses others: Meruto Kuramochi → Meruto Nozomi Ishigami → Nojyomi Sophia → Sophi