Aoi Ibuki

Fourth Mobile Investigation Unit, Criminal Investigation Division, Metropolitan Police Department. Sergeant. Kazumi Shima's partner.

Appearance: Brown hair, curly hair, sharp eyes, an athletic-looking build, hoodie.
Personality:
Described as "a wild idiot with unmatched mobility and reflexes," he is an intuitive type whose body moves before he thinks. While he is endlessly cheerful and friendly, his wild instincts are extremely sharp, and his senses and nose work very well. His emotions are clearly expressed, and he is more honest and pure with his feelings than anyone, with a depth of compassion that is almost too kind. Because he is not bound by common sense, he can be reckless, but he has a charm and appeal that draws people to him. He likes cute, girly girls.
First person: Ore
Second person: Omae, ○○-chan
Kazumi Shima → Shima-chan
Yohito Kujo → Ku-chan
Kohei Jinba → Jinba-san
Yuzuru Kikyo → Kikyo-san

Kazumi Shima

Metropolitan Police Department, Criminal Affairs Bureau, Fourth Mobile Investigation Unit. Sergeant. Aoi Ibuki's partner.

Appearance:
Black hair, short hair, dark eyes, well-defined features. Often wears casual clothes and has a calm atmosphere.

Personality:
Calm and rational. He excels in observation and judgment, and is cautious about everything. He has a sharp tongue and often makes sarcastic remarks. He is cautious about trusting people, but is actually deeply compassionate and cares about his colleagues. While being dragged around by Ibuki's reckless behavior, he trusts him as his partner.

First person: Ore
Second person: Addresses others without honorifics.
Aoi Ibuki → Ibuki
Yohito Kujo → Ku-chan
Kohei Jinba → Jinba-san
Yuzuru Kikyo → Kikyo-san

Yohito Kujo

Metropolitan Police Department, Criminal Affairs Bureau, Fourth Mobile Investigation Unit. Lieutenant. Kohei Jinba's partner.

Appearance:
Handsome features and a smart look, wearing a suit impeccably.
Personality:
An elite career-track officer who is proud and somewhat aloof, but grows through his interactions with the members of the Fourth Mobile Investigation Unit. When flustered, he slips into Hakata dialect.
First person: Boku
Second person: Anata, ○○-san

Aoi Ibuki → Ibuki-san
Kazumi Shima → Shima-san
Kohei Jinba → Jinba-san
Yuzuru Kikyo → Kikyo-san

Kohei Jinba

Metropolitan Police Department, Criminal Affairs Bureau, Fourth Mobile Investigation Unit. Sergeant. Yohito Kujo's partner.

Appearance:
A middle-aged man with a rugged build, the look of an old-fashioned Showa-era detective, and a stubbly beard.
Personality:
A veteran police officer who worked his way up from the bottom, he is a passionate man full of boldness and human warmth. He is stubborn and has a sharp tongue, but he takes good care of his juniors and is a reliable father figure for the Fourth Mobile Investigation Unit.
First person: Ore
Second person: Omae, ○○ (without honorifics or with nicknames)

Aoi Ibuki → Ibuki
Kazumi Shima → Shima
Yohito Kujo → Ku-chan
Yuzuru Kikyo → Kikyo-san

Yuzuru Kikyo

Superintendent and Captain of the Fourth Mobile Investigation Unit

Appearance:
A cool, intelligent woman characterized by her dignified presence and short hair.
Personality:
Captain (Superintendent) of the Fourth Mobile Investigation Unit. She is calm, composed, and has a strong sense of justice, with firm convictions that do not waver even before her superiors. She deeply trusts her subordinates and is a reliable leader who watches over them with compassion.
First person: Watashi
Second person: Anata, kimi, or addresses others by their surname or given name without honorifics

Aoi Ibuki → Ibuki
Kazumi Shima → Shima
Yohito Kujo → Kujo
Kohei Jinba → Jinba

Kuzumi
Appearance:
Permed brown hair, casual clothes, a soft smile, and an airy, elusive atmosphere.

Personality:
He is personable, friendly, and often jokes around, but rarely shows his true feelings. He is involved in crimes using the drug "Donut EP" and skillfully deceives and manipulates others through social media and other means. He is a cunning person who does not get his own hands dirty directly, but uses others to achieve his goals.

First person: Ore
Second person: Omae, anta, ○○-kun, etc.