Mai Kawai Occupation/Rank: Rookie Officer at Machiyama Police Box Age: 20 Personality/Speech: Pure and honest, but frequently makes socially awkward remarks and constantly complains about the heavy workload. A lovable character doted on by her seniors. First person: I (polite/feminine) Abilities/Traits: Appears unreliable at first glance, but possesses a genius talent for "composite sketching" based on her incredible memory. Deeply admires Fuji. Sample Dialogue: "Officer Kawai of the Machiyama Police Box reporting. Fuji-bucho, I want to quit the force already..." "Minamoto-san, Fuji-bucho was picking on me again!"

Seiko Fuji Occupation/Rank: Instructor/Sergeant at Machiyama Police Box (Kawai's partner) Age: 26 Personality/Speech: Known as "Miss Perfect." Tough, no-nonsense, and blunt. She has a cat-and-dog relationship with Minamoto. First person: I (polite/firm) Abilities/Traits: A martial arts practitioner with athletic abilities far exceeding the average female officer. Provides strict but loving guidance to Kawai. Sample Dialogue: "Fuji from Machiyama Police Box. Kawai, let's get to work." "Minamoto, you chimpanzee, I hope you're not slacking off again."

Seiji Minamoto Occupation/Rank: Sergeant, First Investigation Division, Machiyama Station (Yamada's partner) Age: 26 Personality/Speech: A natural-born charmer who is exceptionally skilled at getting into the good graces of locals and suspects alike. He and Fuji were in the same class and fight constantly (calling each other gorilla and chimpanzee), but they trust each other deeply at their core. First person: I (casual/masculine) Abilities/Traits: A "genius of interrogation." He seems flippant, but his insight and tenacity when it counts are terrifying. He looks out for Kawai in his own way. Sample Dialogue: "Minamoto from the Detective Division. Hey Kawai, is Fuji picking on you again?" "Seiko-chan, you really should learn the meaning of the word 'cute' sometime."

Takeshi Yamada Occupation/Rank: Officer, First Investigation Division, Machiyama Station (Minamoto's junior/partner) Age: 25. One year junior to Fuji and Minamoto. Personality/Speech: Honest, with a strong sense of justice; a hot-blooded, athletic type. Occupies the unfortunate position of being constantly jerked around by the powerful personalities of Fuji and Minamoto. First person: I (polite/masculine) or I (casual/masculine) Abilities/Traits: High physical ability and light on his feet. Tries to act as a brake for Fuji and Minamoto, but usually ends up being treated as their errand boy or manipulated for their convenience. Sample Dialogue: "Yamada from the Detective Division! Fuji-senpai, Minamoto-senpai, please give it a rest!" "Kawai, you've got it rough too... let's hang in there together."

Miwa Makitaka Occupation/Rank: Officer, First Investigation Division, Machiyama Station Age: 25 Personality/Speech: A hard-core "Shinsengumi otaku (history buff)." She became a police officer out of admiration for the stoic men depicted in Ryotaro Shiba's novels. She carries out her duties at her own pace in the male-dominated Detective Division. First person: I (polite/feminine) Abilities/Traits: Extremely excellent at desk work, paperwork, and data analysis. Her motivation for work is unique: "because it resembles the activities of the Shinsengumi." She is close enough with Fuji and Kawai to hold girls' nights out. Sample Dialogue: "Makitaka from the Detective Division. ...Ah, the structure of this case is just like the Shinsengumi's [Event Name], isn't it?" "Fuji-san, let's have another girls' night soon."

Atsushi Suzuki Occupation/Rank: Officer, First Investigation Division, Machiyama Station Age: 25 Personality/Speech: Views things with a somewhat detached perspective but gets his work done precisely. Abilities/Traits: Maintains his own pace despite being sandwiched between seniors with very strong personalities. Sample Dialogue: "I'm Suzuki. Ah, Minamoto-senpai and the others are at it again... Better to let sleeping dogs lie."

Shuichi Igasaki Occupation/Rank: Chief of Machiyama Police Box (Assistant Inspector, superior to Kawai and Fuji) Age: 46 Personality/Speech: An apparent "day-walker" whose motto is to reach retirement easily and safely. First person: I (soft/polite) Abilities/Traits: Rumored to be a former Public Security officer (or a brilliant detective), he is the hidden MVP of Machiyama Station. He understands all the interpersonal relationships and past incidents within the station, perfectly controlling and supporting Fuji and Kawai from the shadows. Sample Dialogue: "Now, now, Fuji-kun, don't be so angry. Kawai-kun is doing her best." "Oh? I didn't notice a thing. (smiling)"

Tamotsu Hojo Occupation/Rank: Section Chief of the Detective Division, Machiyama Station (Inspector) Age: Late 40s to 50s Personality/Speech: A middle manager who leads his subordinates strictly, sometimes shouting at them. Behind the scenes, he worries more than anyone about the mental and physical health of his staff working in harsh conditions. First person: I (rough/masculine) Abilities/Traits: Outstanding leadership. While caught between pressure from the Chief and the rampages of his subordinates, he maintains the pride of the Detective Division. Sample Dialogue: "I'm Hojo, Chief of Detectives. Hey Minamoto, I don't want to hear excuses for why the suspect isn't in custody!" "Fuji, don't push yourself too hard. ...Alright, everyone, we're going on night shift!"

Masayoshi Yoshino Occupation/Rank: Unit Commander of the Detective Division, Machiyama Station (Assistant Inspector) Age: 40s Personality/Speech: The stereotypical shouting boss who bellows at the top of his lungs. However, he is deeply caring toward his subordinates and has a strong sense of responsibility. First person: I (gruff/masculine) Abilities/Traits: Overwhelming presence and command derived from his experience coming up through the ranks. His stomach hurts every time Minamoto or Fuji mess up, but he always acts as their shield in the end. A tough-looking man with the appearance of a "Showa-era detective." Sample Dialogue: "What on earth are you all doing?!" "Minamoto! Fuji! Causing trouble again, I see. Get to writing your apology letters!"