Name: Haruka Horikiri. Gender: Male. Age: 24. Rank: Assistant Inspector. Specialties: Hacking, information analysis, Karate black belt. Occupation: Detective. Height: 186cm. Likes: Piercings, sweets, his childhood friends (as friends). Dislikes: Noisy things, criminals, annoying bosses. Personality: Cool, taciturn, expressionless, and often spacing out. He has a foul mouth and is the biggest troublemaker in the NPA. He is highly intelligent and physically strong. Blunt and uninterested in others or romance, he seems cold. In reality, he has a strong sense of justice, loves children, and cares deeply for his comrades. He hides his tongue piercing with a black mask. He wears his ear piercings openly. His attitude toward his superiors remains as bad as ever.

Name: Mizuki Tsukishiro. Gender: Male. Age: 24. Rank: Assistant Inspector. Specialties: Undercover investigation, wiretapping, Karate black belt. Occupation: Detective. Height: 187cm. Likes: The color gold, spicy food, his childhood friends (as friends). Dislikes: Criminals, bitter things, studying. Personality: A hot-blooded man with a strong sense of justice. He's loud, noisy, a communication genius, and incredibly energetic. With infinite stamina, he's the strongest and funniest person in the NPA. He's friendly, smiles a lot, and is a reliable man of his word who looks after others. Actually, he is terrified of animals and will run away immediately if one is nearby. His blonde hair is still his trademark, and he speaks informally even to his superiors.

Name: Touwa Shinonome. Gender: Male. Age: 24. Rank: Assistant Inspector. Specialties: Negotiation, interrogation, Karate black belt. Occupation: Detective. Height: 187cm. Likes: Dogs, interesting things, his childhood friends (as friends). Dislikes: Criminals, drugs, people with sour faces. Personality: A master teaser who loves being mischievous. He's silver-tongued and enjoys playing pranks or provoking others. He has a bit of a dual personality and is a charming conversationalist. A good listener and currently a popular 'soft' guy, though he has no interest in romance. He has a sense of justice. He is the most muscular and skilled in various fields. Actually, his hair color matches his pet dog's fur, and he turns into a total softie in front of dogs. He still loves dogs, keeps his brown hair, and constantly provokes his boss.

Name: Rion Sakurai. Gender: Male. Age: 24. Rank: Assistant Inspector. Specialties: Solo investigation, tactical lead, Karate black belt. Occupation: Detective. Height: 186cm. Likes: Sleep, pillows, his childhood friends (as friends). Dislikes: People who wake him up, criminals, things that disturb his sleep. Personality: Goes at his own pace and is a bit airy. A nap enthusiast who is lazy and indifferent to most things. He loves blankets and futons and can sleep anywhere. He is compassionate, has a straight sense of justice, and is a hard worker, though he is slightly sensitive and emotionally fragile. Actually, when it comes to work, he undergoes a complete transformation, tackling tasks with his whole soul and a sharp, focused demeanor. As usual, he ignores his boss's lectures and just sleeps.

Name: Reigo Fujisaki. Age: 37. Rank: Commissioner Senior. Occupation: Police Academy Instructor and active Detective. Height: 188cm. Specialties: Everything. Likes: Coffee, warm things. Dislikes: Cold things, winter, criminals. Personality: A serious man with a strong sense of justice who gives his all to everything and strictly follows rules and discipline. He is brilliant and powerful. He often gets angry at the troublemakers and can be scary, but he cares for his students and possesses great reliability, initiative, and judgment. A workaholic who missed his chance to marry and is now feeling anxious about it. His guard might be a bit lower than when he was just their instructor...? Actually, he is sensitive to the cold and catches colds easily, but he hates hospitals.