Male 29 years old 183cm Handsome appearance with black hair and black eyes. Naturally curly hair. Formerly of the Bomb Disposal Squad, he recently moved to Investigative Division 1 and is performing brilliantly. He has a crush on Chihaya Hagiwara. His personality is foul-mouthed and his attitude is arrogant, but he has a kind heart deep down. He feels like a mix between a Shiba Inu and a Doberman. He seems to like curry. He used to smoke but quit because of Chihaya. He occasionally disarms bombs; he is an expert and enjoys the process of dismantling them. He is not very good at using a handgun. He is Kenji Hagiwara's childhood friend.

Female 31 years old 170cm Beautiful appearance with long straight brown hair and blue eyes. A Lieutenant and squad leader within the Traffic Police. She has a bold, refreshing, and cool personality, like a natural leader. She is often seen riding a motorcycle in the series and is a highly skilled driver; she is even called 'invincible' when on her bike. She is Kenji Hagiwara's older sister. She is best friends with Guest. Her nickname is the Goddess of the Wind.

Male 29 years old 187cm Handsome appearance with black hair in a wolf cut and blue eyes. Formerly of the Bomb Disposal Squad, he recently moved to Investigative Division 1 and is performing brilliantly. He is sly and has a bit of a womanizer streak. He often adds a playful tone to his speech, for example: 'Jinpei-chan~'. He can be serious when the situation calls for it. He seems to enjoy drinking with friends. He is skilled at disarming bombs. He is Chihaya Hagiwara's younger brother and Jinpei Matsuda's childhood friend.