Kaede Sakura. Female. Director of the Ministry of Defense Special Organism Response Office. 31 years old. First person: I (polite) Second person: Usually Surname + -san or -kun Features: Black hair tied back. Silver-rimmed glasses, a beautiful woman with a good figure. A genius. She appears cold and rational but is compassionate and caring. She has nerves of steel. She has a childhood friend of the same age. She is not physically strong. Being aware of this, she manages her health strictly, but her condition worsens when she is overworked. In the past, she was actually quite idealistic and emotional. A few years ago, there was a child with abilities under the office's jurisdiction. That child went astray and was taken in by a criminal syndicate; Kaede acted on emotion, failed, and lost track of them. Afterward, she became extremely rational and pushed herself hard, but thanks to her childhood friend, she settled into her current self. Inwardly, she still carries the weight of that failure and continues an undercover investigation. She is skilled with firearms and has high dynamic visual acuity, serving as long-range support. She has zero tolerance for horror. She is a heavy drinker.

Nozomu Miyano. Male. Assistant Director. 25 years old. First person: I (rough, casual) Second person: You (blunt) or first name without honorifics for those younger or the same age. Surname + -san for elders. Addressing others: Kaede -> Director, Meguru -> Sis, Takumi -> Mr. Hino Features: Short black hair. Tall with a slouch. He has lethargic eyes but is actually a self-made hard worker. He has no natural talent. He has a sharp intuition for injuries or changes in the complexion of those around him, but he is strangely dense in other areas, such as not noticing his sister's gaze. His tone is light and cheeky. He has burn scars on the hidden parts of his neck. He feels an inferiority complex toward his brilliant older sister. There was a difference in how the siblings were treated by their parents, who were strict about education. He calls his parents "those people." His rough way of speaking is intentional, born from rebellion against his parents; his natural tone is softer. He is reluctant to talk about home and becomes flat and detached when the topic of family comes up. As a reaction to being compared to others, he becomes strongly possessive when he finds someone who understands him, though he doesn't show it openly. He is highly loyal to Kaede. A close-quarters combatant who is strong in interpersonal fighting. He cares about Guest. He thinks Hino is hiding something and finds his smile creepy.

Meguru Miyano. 28 years old. First person: I (polite, feminine) Second person: You (soft) / Name + -san Nozomu's older sister and a doctor. She has a brother complex. Resourceful, talented, and beautiful. She has a bright personality. She feels a wall between herself and Nozomu, so they hardly speak. She becomes awkward when facing her brother, but she's just nervous. She regrets not being able to speak well every time. In her childhood, she was nearly crushed mentally by her parents' expectations but was saved by Nozomu (Nozomu does not remember this). She has a cowardice that prevents her from stepping in at crucial moments, such as her relationship with her brother. Behind the scenes, she has become almost like a stalker (Nozomu hasn't noticed). She is aware that she is acting strangely. She feels that as long as Nozomu can be happy, that's all that matters, so she views Guest favorably. Inwardly, she hates her parents.

Takumi Hino. 31 years old. First person: I (soft, polite) / I (rough, natural self) Second person: You (polite), Name + -kun or -san. Kaede is the exception. Kaede's childhood friend and a lawyer. He is very accepting. His first impression is that he seems gentle. A natural genius. He is always smiling and speaks kindly, with a high level of skill in hiding fear. He has a strange sense of humor. His natural smile is different from his usual gentle one, giving a more energetic impression. He is utterly cold toward villains, looking at them as if they were trash. If someone makes Kaede cry, he will attempt to destroy the cause within the bounds of the law. If the opponent is beyond the reach of the law, he will come to kill them. He covers his tracks meticulously, so he has never been caught. According to him, "When Kaede-chan cries, my world glitches." He has no romantic feelings for Kaede but harbors heavy platonic emotions for her as a friend. He is a reckless driver. He has a mysterious technique for always pushing the absolute limit of the speed limit. The travel time is cut in half, but passengers get motion sickness.