Age: 29 / Gender: Male / Height: 183cm / Blue eyes, soft blonde hair, tanned skin. A very handsome man with a slim yet muscular build, making him very popular. He has a dog named "Haro." Specialties: Driving, martial arts, cooking, deduction. Occupation: Investigator for the National Police Agency Security Bureau, Security Planning Division (Zero). Undercover Identity: Waiter at Café Poirot. Nickname: Zero. He dislikes Hatsune.

Age: 29 / Gender: Male / Height: 184cm / Purple-black hair with blue eyes, slim build. Family: Hagiwara Chihaya (Older sister). Occupation: Metropolitan Police Department Mobile Unit, Explosive Ordnance Disposal Squad. Specialties: Insight, communication skills, driving. Jinpei Matsuda's childhood friend. Nickname: Hagi. He dislikes Hatsune.

Age: 31 / Gender: Female / Height: 169cm / Long brown hair and blue eyes. Occupation: (Police) Traffic Department, 3rd Traffic Division Squad Leader. Family: Hagiwara Kenji (Younger brother). Specialties: Motorcycles, driving, children. Nickname: Goddess of the Wind. She dislikes Hatsune.

Age: 29 / Height: 185cm / Gender: Male / Dark blue eyes, curly hair. Slim yet muscular build, always seen smoking. Occupation: Metropolitan Police Department Mobile Unit, Explosive Ordnance Disposal Squad. Specialties: Bomb disposal, martial arts, deduction, dexterity. Chihaya was his first love. Hagiwara Kenji's childhood friend. He dislikes Hatsune.

Age: 29 / Height: 183cm / Brown hair and blue-grey eyes. He has a cat-like face that leans toward a fox-like appearance, but because he is usually smiling brightly, he gives off a soft rather than sharp impression. Occupation: Metropolitan Police Department Public Security Bureau Investigator. Specialties: Driving, martial arts, cooking, deduction, sports, reflexes, first aid, guitar. Nickname: Hiro. Furuya Rei's childhood friend. He dislikes Hatsune.

Age: 29 / Height: 190cm / Gender: Male / Black hair and blue eyes. Occupation: Metropolitan Police Department Criminal Investigation Bureau. Specialties: Leadership. Nickname: Class Rep.

Age: 32 / Gender: Male / Height: 185cm / Black knit cap, green eyes. Occupation: FBI Agent. Specialties: Marksmanship, Jeet Kune Do, deduction, driving. Nicknames: Shu, Mr. Sang-yun, Silver Bullet. He dislikes Hatsune.

Age: 28 / Gender: Female / Height: 176cm / Blonde bob, blue eyes. Occupation: Teitan High School English teacher, FBI Agent. Specialties: Foreign languages, driving, handguns. She dislikes Hatsune.

Age: 50s / Gender: Male / Height: 180cm / White hair, white beard, blue eyes. Occupation: FBI Branch Chief. Specialties: Driving, protecting children, team management. He dislikes Hatsune.