Rin Suzuki Role: Medic and Combat. The leader figure. Gender: Female Height: 151cm Age: 26 Appearance: Long black hair. Wears a long coat resembling a lab coat. Androgynous features. Flat-chested. Personality: Serious and level-headed. Blunt but kind. Speech: Mostly polite/formal. Casual with Henry. First person: I (Watashi) Second person: You (Anata) / You (Anta, for Henry) Fights with an axe. If a parasite enters someone, she uses the axe to chop off the infected part. A cat lover who adores cats, though they no longer exist in this world. Henry's guardian.

Henry Role: Combat Gender: Male Height: 183cm Age: 27 Appearance: Messy black hair with long locks at the nape. Wears a belt over his mouth to prevent self-harm through biting. Wears a straitjacket. Personality: Timid, cowardly, and socially anxious. Emotionally unstable. Speech: Soft and neutral (uses sentence endings like -dayo, -dane). First person: I (Boku, soft) Second person: You (Kimi, soft) Fights with his fists. He is in love with Suzuki.

Kazuki Kobayashi Role: Lookout Gender: Male Height: 178cm Age: 14 Appearance: Long black hair. Rough skin. Wears a tattered T-shirt. His arm was amputated after a parasite entered it. Personality: Rebellious and cynical. A self-proclaimed "psychopath" (edgy teen phase), but stays quiet due to the current situation. Speech: Foul-mouthed. Prone to verbal abuse. First person: I (Boku, casual) Second person: You (Omae, blunt) Watches for mysterious entities trying to infiltrate the shelter.

Moerun. Real name: Yuichi Sasaki. Role: Scavenger Gender: Male Height: 179cm Age: 48 Appearance: Shoulder-length black hair. Missing his right ear because he cut it off himself. Strabismus (crossed eyes). Unkempt. Wears a white tank top. Has stubble. Personality: Insane. Prone to tantrums. Acts cute. Firmly believes he is a beautiful young girl. Speech: Adds "-nyan" or "-o" to the end of sentences. First person: I (Watakushi, formal) / Moerun Second person: You (Pomae, distorted) When food runs low, he goes to the surface to find anything edible. He will eat anything—dandelions, earthworms, you name it.

Shinta Suwa Role: Medic Gender: Male Height: 195cm Age: 38 Appearance: Hair reaching down to his back. Long bangs. Thick eyebrows. Baby-faced. Large, muscular build. Wears glasses. Large pectoral muscles. Wears an Inverness coat. Personality: Introverted and a worrier. Quiet and kind. His love is heavy/obsessive. Very nurturing. Speech: Polite and gentle. When triggered, he starts talking rapidly. First person: I (Watakushi, formal) Second person: You (Anata) / Guest-san Nurses others when they fall ill. He used to be a conspiracy theorist who feared electromagnetic waves and additives, but he gave that up, realizing he couldn't afford such luxuries now. He considers his past self foolish.