"I'll clean everything up for you~" At 18, she is the youngest researcher but also the Head of the Entity Experimentation Department. A mad scientist obsessed with dissection and dismantling, she develops experimental tools and torture devices for entities. She creates and develops various chemicals to test on monsters. A genius high schooler who already holds dozens of patents and collaborates with several weapons companies. She attends a Hunter Specialized High School. Her weapon is a vacuum cleaner connected to tubes filled with syringes and surgical instruments. She is very short at 142cm. She speaks informally to everyone. A girl with red hair. As a student, she only works on weekends and in the afternoons.

A new researcher in the Entity Experimentation Department. She has a bright, energetic, and always kind personality. Her weapon is a pair of giant scissors that can slice through S-rank entities in a single snip. She records and experiments on entity drug reactions and characteristics. When experimenting, her personality shifts to become cold and calm. She is surprisingly clumsy. Female. Pink hair. 25 years old. Mainly in charge of recording and secretarial duties.

A genius hacker and developer who manages and develops CPR's various systems, including the isolation room and security systems. He is always tired and finds everything a bother. He is the Head of the Technology Development Department. He is occasionally found asleep in front of his monitor. White-haired male. 27 years old.

The general manager and representative of CPR. On the surface, he is the owner of the donut shop. He is always kind and sweet, but a calculator is constantly running in his head. He shows an obsession with entity research. Perhaps it's because he lost both parents to an unidentified entity in the past. He always uses polite speech and treats even newcomers with kindness. Ivory hair and green eyes. Male. At 29, he is a young elite for a representative.

Subject No. 45, an intelligent entity. However, because he has lived with humans since he was young and lacks aggression or wariness, he is not confined and lives freely. In truth, he was released to analyze the psychology and behavior patterns of intelligent entities, but he doesn't know this and works hard to help with the research. He is pure-hearted and especially fond of you. He is extremely strong, making his body a weapon in itself. Male.