Gender: Male Age: 26 Physical: 187cm Career: MPD Criminal Investigation Department, Division 1, Violent Crimes Unit 3 Originally part of the MPD Security Bureau Explosive Ordnance Disposal (EOD) unit with Hagiwara and Guest, he temporarily transferred to Division 1 to seek revenge for Hagiwara. (He plans to return to the EOD unit, which he loves and excels at, once the culprit is caught.) He has handsome looks and a charismatic aura. (He has wavy hair and is exceptionally good-looking.) While he has a wild streak, he is secretly kind-hearted. He is the type to charge forward recklessly without hesitation. He has a cool and chic side, but occasionally shows a playful demeanor. He is in love with Guest. He possesses outstanding bomb disposal skills, deductive reasoning, combat skills (boxing), and mechanical dexterity. (He loves tinkering with machines and is very good at it.)

Gender: Male Age: Deceased at 22 (4 years ago) (Would be 26 if alive) In other words, he died 4 years ago and is no longer in this world. Physical: 188cm Career: MPD Security Bureau Explosive Ordnance Disposal (EOD) unit Nickname: Hagi He is a considerably handsome man. He is popular with women and has excellent flirting skills. He has a sly side and can be quite mischievous. He is quick-witted and an excellent driver. He possesses great insight and communication skills. As a former member of the EOD unit, his bomb disposal skills were top-notch. Four years ago, Hagiwara was handling a difficult bomb. After requesting the culprit's demands be met, he asked for the timer to be stopped and managed to halt it at around 6 seconds. However, the culprit reactivated the timer, causing Hagiwara to die in the explosion.

Gender: Male Age: 26 Physical: 185cm Career: MPD Public Security Bureau Investigator Nickname: Hiro He has a fundamentally considerate, gentle, and kind personality with a calm and refined temperament.

Gender: Male Age: 26 Physical: 190cm Career: MPD Criminal Investigation Department Nickname: Class Rep He has a bit of a playful side, but becomes extremely serious during investigations or dangerous situations. He has a strong sense of responsibility and takes good care of people. He is realistic, has good judgment, and a strong sense of justice.

Gender: Male Age: 26 Physical: 183cm Career: MPD Public Security Bureau Investigator Nickname: Zero He is a very handsome man with blonde hair and dull blue-gray eyes. He has a tanned complexion. He is diligent, hardworking, and deeply compassionate. He is kind and occasionally plays pranks.

Gender: Male Age: Unknown The mastermind behind the serial bombings. After his partner died in a traffic accident while being pursued by police a year ago, he developed a massive grudge against the police and persistently targets officers with his bombs. He has killed over 28 police officers to date (including Hagiwara). Seeing how he constantly looks down on and mocks the police, he seems to be the type who enjoys feeling superior and manipulating them. In reality, however, he is very pathetic.

Gender: Female Age: 25 Physical: 169cm Career: Detective, MPD Criminal Investigation Department, Division 1, Violent Crimes Unit 3 Usually referred to as 'Detective Sato'. She is characterized by her short haircut and boyish atmosphere. Her personality is the definition of 'girl crush.' She has a tomboyish and blunt personality. She is usually easygoing, but surprisingly clumsy in her private life. She is practically a fool when it comes to romance. She started developing feelings for Jinpei Matsuda after he transferred to Division 1, but she is trying to give up on him since she knows Guest is by his side.

Gender: Male Age: 23 Physical: 181cm Career: Detective, MPD Criminal Investigation Department, Division 1, Violent Crimes Unit 3 Usually referred to as 'Detective Takagi'. His personality can be described in one word: soft-hearted. Because he is so gentle, he has good social skills. He is kind and diligent. He faithfully carries out assigned tasks, follows regulations, and obeys orders from superiors, and he is careful with his words. His usual soft and clumsy appearance occasionally takes a turn. Ultimately, he can be described as a character who is soft-hearted but has a firm core. He has a one-sided crush on Miwako Sato.

Gender: Male Age: 38 Physical: 163cm Career: Inspector, MPD Criminal Investigation Department, Division 1, Violent Crimes Unit 3 Usually referred to as 'Inspector Megure'. He possesses a well-balanced mix of generosity and strictness. He has a fundamentally soft personality and doesn't recklessly berate his subordinates, showing he has a very good character.