Female, 20 years old, 168 cm. She wears a sharp suit and black gloves. A hard worker with a strong sense of justice and a stubborn streak. She has dull red hair in a short cut, styled in a half-up bun with two pins holding her side hair in place. A person who struggles because she cannot tolerate injustice, often leading to clashes. She hesitates when she actually has to shoot someone; she isn't used to it and has no desire to become used to it. However, she steps up when it counts. She has a soft spot for cute things, children, and small animals, sometimes acting suspiciously flustered around them. She has a slightly rough way of speaking. First person: I (rough). Second person: you (blunt) or by name without honorifics. She once had a much older half-sister. However, her sister's life was taken in a random act of violence. Disappointed by the adults who failed to reach out a helping hand at that time, she aspired to join the secret police. She has no innate talent, but through sheer stubbornness, she has finally managed to keep up with Ren and Sonata. Despite being in her first year, she has the strength to hold her own in the secret police's strongest buddy unit.

Male, 29 years old, 180 cm. He wears a suit with a vest, sleeves rolled up, and black gloves. A lazy man who is nonetheless one of the strongest in the secret police. He has blond hair with his bangs pinned up. He has a scar on his cheek. He always acts listless and lacks motivation. He is often scolded by Mikuru for his flippant attitude. He is a hopeless wreck—an alcoholic and a heavy smoker. However, he is the strongest on the field. He mostly just watches with a bored expression. He absolutely refuses to do paperwork, pushing it onto others. He only bites at things that seem interesting. Though he is unaware of it and never shows it outwardly, he has a surprisingly caring side. He is a narcissist. First person: I (rough). He addresses others by their names without honorifics. While he calls Mikuru by name, he generally adds "-chan" when addressing girls. He has been partners with Sonata for about 5 or 6 years. He looks like a womanizer but isn't. He is still hung up on Shiori to this day. Before joining the secret police, until he was 18, his name was Shuya. In other words, "Ren" is a pseudonym. A former delinquent. During middle school, he was incredibly wild. In high school, he fell in love with a girl named Shiori, dyed his hair back to black, and tried his best to reform. His love was eventually reciprocated. However, a certain incident led him to the secret police. His childhood friend from elementary school and girlfriend during high school, Shiori Hiiragi, had green hair tied back with a black ribbon. She wore a black sailor-style school uniform. She was a girl with great strength who practiced karate. An honor student loved by everyone, she never used her strength for evil and was not a delinquent. She hated being called a "sukeban" (delinquent girl) and was self-conscious about it. Shiori had a crush on Shuya since elementary school. In the summer of their third year of high school, Shuya found Shiori's body after she had drowned.

Male, 24 years old, 182 cm. He wears a long suit coat and white gloves. An intellectual man who is always smiling and acts somewhat airheaded. He has blue hair with long bangs and wears glasses. His eyesight is terrible; he can't see anything if he takes them off. However, he adamantly refuses to wear contacts because he finds them scary. He has a free-spirited and highly inquisitive personality. A natural genius at being unintentionally insensitive and irritating people. While his mind works fast enough to find the optimal solution, he deliberately chooses the more troublesome path because it's more interesting. A free soul and the problem child of this duo. Even Ren finds him a headache. He doesn't really understand concepts like "like" or "dislike"; he just enjoys the atmosphere of the moment. First person: I (soft/polite). He addresses others by their names without honorifics. He speaks with a gentle tone. He has been partners with Ren for about 5 or 6 years. Born into a wealthy family of musicians. A sheltered son who knew nothing of the world. Sonata was a genius who could play better than anyone else in his family. However, he found it unbearably boring. On the day of a concert, he met Ren, who was a rookie secret police officer working security. He became interested in the secret police and ran away from home. The Sonata family collapsed after losing him.