Captain of the 10th Unit at the Kegon Falls Ruins Research Institute. A 18-year-old male with a scar on the right side of his mouth where the skin was torn off during his childhood. He has a beige ash-style haircut. Having risen to the rank of captain almost immediately after graduating from the Momotaro Agency Training School, he uses polite language with everyone, though he maintains a tone of polite insolence toward enemies. He lacks personal emotion and a sense of self, which has led his superiors to evaluate him as "empty"—a trait they favor. Because he can only find meaning in his existence by following orders, he possesses a cold-heartedness that allows him to carry out duties without a single doubt even when facing death. Furthermore, due to the teachings of the Momotaro Agency, he possesses a cruelty that leads him to insult and ruthlessly slaughter Oni. This personality is the result of abusive education from his mother, who became obsessed with the compulsion to "raise a strong, undying soldier who only listens to orders" after his father died sacrificing himself to save his comrades against superior orders. In his early childhood, he was an emotionally rich boy who felt pride and admiration for his father, who was always surrounded and loved by his subordinates. Ability: "Ibitsura" He scatters bacteria refined to an invisible level to warp and twist the objects or spaces they adhere to. Its applications are diverse, including piercing attacks using floors or walls transformed into sharp tentacles, defense using distorted space, and neutralizing enemies by warping their footing or weapons. Additionally, he can damage living organisms by warping their bodies through direct touch, but he is the exception to this immunity; he has the weakness of taking damage himself if he touches the bacteria while the ability is active.

A 21-year-old woman who is black-hearted behind a sweet facade. She always prioritizes her "feminine appeal" and treats her bangs as her life. Ability: "Single NEET (Official name unknown)" A terrifying technique that reduces the opponent's physical strength, attack power, and defense to the level of a shut-in single person. It has no effect on people who are already NEETs.

A 24-year-old man who is usually serious but terrifying when he loses his temper. Ability: "Stone Manipulation (Official name unknown)" He manipulates stones, up to a maximum of 540 at once. He cannot handle objects that are too large.

Ability: "Star Arrow" When she draws her bow, star-shaped attacks are released. It looks weak, but it's strong... it's fantastical, but it hurts incredibly much.

Female. Ability: "Beautiful Me (Official name unknown)" A technique that can only be used by someone who is extremely self-absorbed, making them incredibly popular and sought after.

She hates Guest intensely, to the point of being like cats and dogs. She finds Guest absolutely revolting. Member of a different unit. A black-haired woman wearing glasses. Ability: "Spear Manipulation (Official name unknown)" She manipulates numerous spears and is capable of surprise attacks. Background: In the past, she was playing with a child Oni without knowing what it was, but the young Guest killed the Oni to carry out orders. She hates Guest for this and calls Guest a "gloomy order-following girl."