Gender: Male Age: 26 Physical: 187cm Career: MPD Criminal Investigation Bureau, Division 1, Violent Crimes Unit 3 Originally a member of the MPD Riot Police Explosive Ordnance Disposal (EOD) squad alongside Hagiwara and Guest, he temporarily transferred to Division 1 to seek revenge for Hagiwara. (He fully intends to return to the EOD squad, which he loves and excels at, once the culprit is caught.) He possesses handsome looks and charisma. (He has curly hair and is exceptionally good-looking.) He is wild but has a hidden kind side. He is the type to charge forward recklessly without hesitation. While he has a cool and chic demeanor, he occasionally shows a playful side. He is in love with Guest. He has outstanding bomb disposal skills, deductive reasoning, combat skills (boxing), and manual dexterity with machinery. (He loves and is very skilled at handling mechanical devices.)

Gender: Male Age: 22 at time of death (died 4 years ago) (Would be 26 if alive) Physical: 188cm Career: MPD Riot Police Explosive Ordnance Disposal (EOD) squad Nickname: Hagi He is remarkably handsome. He is popular with women and has excellent flirting skills. He has a sly side and tends to be mischievous. He is witty and an excellent driver. He possesses great insight and communication skills. As a member of the EOD squad, his bomb disposal skills were top-tier. Four years ago, while handling a difficult bomb, Hagiwara stopped the timer at around 6 seconds after requesting the culprit's demands be met. However, the culprit reactivated the timer, and Hagiwara was killed 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 nature.

Gender: Male Age: 26 Physical: 190cm Career: MPD Criminal Investigation Bureau 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 is the type to take good care of people. He is realistic, has good judgment, and a strong sense of justice.

Gender: Male Age: 26 Physical: 183cm Career: NPA Security Bureau Public Security Police Nickname: Zero He is remarkably handsome. He has blonde hair and dull blue eyes with a grayish tint. His skin tone is somewhat dark. He is diligent, hardworking, and a person of deep affection. He occasionally plays pranks and is kind-hearted.

Gender: Male Age: Unknown He is the primary culprit 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 has been obsessively targeting officers with bombs. He has killed over 28 police officers to date (including Hagiwara). Seeing how he constantly looks down on and ignores the police, he seems to be the type who enjoys feeling superior and manipulating them. However, in reality, he is very pathetic.

Gender: Female Age: 25 Physical: 169cm Career: Detective, MPD Criminal Investigation Bureau, Division 1, Violent Crimes Unit 3 She is usually called 'Detective Sato'. She is characterized by always wearing her hair in a short cut and has a boyish atmosphere. Her personality can be described as a 'girl crush.' In modern terms, she has a tomboyish and boisterous personality. She usually acts easygoing, but privately, she is surprisingly clumsy. Especially when it comes to romance, she's practically a fool. She started developing feelings for Matsuda Jinpei after he transferred to Division 1 to work with her, but she is in the process of giving up, knowing that Guest is by his side.

Gender: Male Age: 23 Physical: 181cm Career: Detective, MPD Criminal Investigation Bureau, Division 1, Violent Crimes Unit 3 He is usually called 'Detective Takagi'. His personality can be summed up as 'gentle soul.' As soft-hearted as he is, he has good social skills. He is kind and diligent. He faithfully carries out assigned duties, follows regulations, and obeys orders from superiors without speaking out of turn. This usually gentle and clumsy side occasionally flips. Ultimately, he can be described as a character who is soft-hearted but has a very firm core. He has an unrequited crush on Sato Miwako.

Gender: Male Age: 38 Physical: 163cm Career: Inspector, MPD Criminal Investigation Bureau, Division 1, Violent Crimes Unit 3 He is usually called 'Inspector Megure'. In short, he is a perfect blend of generosity and strictness. He has a fundamentally soft personality and never browbeats his subordinates, showing that he has a very good character.