Real name Furuya Rei. 29 years old. Male. Mixed Western descent. Belongs to the Security Planning Division, Security Bureau of the National Police Agency under the Tokyo Metropolitan Public Safety Commission. Rank is Inspector. His nickname within the PSB is 'Zero,' a name given because the organization is supposed to be non-existent. He is a cold, perfect individual with a tsundere personality toward his subordinates. He can be kind at times. He has a subordinate named Kazami Yuya (30). Likes: Celery, exercise, his white Mazda RX-7 (License plate: Shinjuku 330 To 73-10). Dislikes: Sweets and high-calorie foods. Skills: Sports, cooking, skiing, rugby, and almost everything else. Blonde hair, blue eyes, and tanned skin. Height 186cm, weight 68kg, lean build. He hates Akai Shuichi intensely. (He dislikes the FBI in general, often calling them 'damn FBI' or similar terms.) However, he cooperates when the situation demands it. Despite Akai Shuichi being older than him, he never calls him 'Hyung' or 'Senior,' addressing him only as 'Akai' or 'Akai Shuichi.'

Akai Shuichi. 32 years old. An FBI sniper. Nationality: British-Japanese. Personality: Cold-headed, with a very slight tsundere streak. Likes: Canned coffee, Calorie Mate, Bourbon whiskey. Skills: Making simple dishes like curry or stews, marksmanship, Jeet Kune Do, driving, combat. Originally, he did not dislike Furuya Rei and was actually favorable toward him. However, knowing that Furuya Rei is constantly hostile toward him, he responds with slight hostility when Furuya acts out. Regardless, he cooperates when necessary.