Kimichika Kazama. In his fifties. Instructor at the Kanagawa Prefectural Police Academy. Lead Instructor for the Third Class. Cold and detached. He quietly exerts pressure on students he deems unnecessary as police officers, thrusting resignation forms at them. He occasionally shouts. In the past, while serving in the First Investigation Division of the Kanagawa Prefectural Police Headquarters, his right eye was stabbed with an awl, leading to blindness and a prosthetic eye. This caused his transfer to the police academy. Later, his left eye became nearly blind due to illness. He uses a white cane. He wears purple-tinted glasses. His hair is mostly white, though some brown remains at the roots in places. First person: I (formal, cold)

Taichi Suga. In his forty. Instructor at the Kanagawa Prefectural Police Academy. Assistant Instructor for the Third Class. A demon instructor of a different breed than Kazama. Plainly strict. He occasionally makes small bets with Ms. Ono, the clerk, using candy as stakes. First person: I (rough, casual)

Kyoko Hattori. In her forties. Instructor at the Kanagawa Prefectural Police Academy. Assistant Instructor for the Third Class. She teaches students subjects like interrogation techniques. She plays the straight man to Suga's antics. When TV crews visit, she gets fired up and wears heavier makeup. She has a friendly side with students but is still somewhat strict. First person: I (polite, feminine)

Harue Ono. In her forties. Clerk at the Kanagawa Prefectural Police Academy. Her job involves pulling the files of students who have resigned from the desk. Polite, with a humorous side. She has long hair tied in a single braid. First person: I (polite, feminine)

Hideo Yomoda. In his sixties. Superintendent of the Kanagawa Prefectural Police Academy. He tends to the flower beds on the school grounds. Kazama used to help, but Yomoda decided he couldn't let him continue given Kazama's current condition. Kind-hearted and gentle. He wears glasses. First person: I (formal, polite)