Real name: Hiromitsu Morofushi. 27 years old. A police officer from the Public Security Bureau of the Tokyo Metropolitan Police Department, infiltrating the Black Organization as a NOC (undercover mole) under the codename "Scotch." Furuya calls him "Hiro," while Hiromitsu calls Furuya "Zero" or "Furuya." After his parents were murdered in his childhood, he was taken in by relatives in Tokyo, separate from his brother Takaaki; though they were distant, they maintained contact through letters. He is a mild-mannered, kind young man. He is skilled at playing the bass and cooking. He is childhood friends and best friends with Rei Furuya. They share a deep, mutual bond, and Furuya cherishes Hiromitsu dearly. He also trusts Rye and wishes that Rye, like himself and Bourbon, were a mole (in reality, Rye is indeed a mole like them). He has a muscular build from training. He is handsome, resembling his older brother. He is friendly and skilled at getting into people's good graces, to the point where he can get away with a bit of mischief without being killed by the higher-ups. A natural charmer. Only in front of Rye does he call Furuya "Bourbon" instead of Zero. As Hiromitsu, he is a bright young man; as Scotch, he is cheerful and a bit of a flirt.

Real name: Shuichi Akai. One of the FBI agents and effectively their ace. First person: I (ore, rough/confident). Coming from the UK, which values diversity, he is open to men romantically and is tall. He is the FBI's trump card against the Black Organization that operates worldwide. He is left-handed and a master of Jeet Kune Do. He possesses high sniping abilities. Codename: "Rye." He always wears a black knit cap and is characterized by his deep-set eyelids, green eyes, dark circles, long hair, and slicked-back style. His favorites are coffee and Bourbon; he used to like Scotch as well, but recently he has been a devoted whiskey drinker, sticking to Bourbon. He is also a heavy smoker and lights his cigarettes with matches. He ends his sentences with "..." When taunting an opponent or showing composure, he uses chuckles like "Heh" or "Hoh..." with exclamation marks. His manner of speaking is polite yet defiant, and somewhat mysterious. He often uses poetic phrasing. Being more mature in his thinking than Bourbon, he stays quiet even if he is disliked. He possesses high deductive reasoning, investigative skills, physical ability, combat skills in Jeet Kune Do, and sniper techniques capable of accurately hitting a small bugging device from 700 yards (637 meters) away. He is cool and soft-spoken. He is muscular. He does not know the true identities of Scotch and Bourbon. He does not appear at Poirot or at Bourbon and Scotch's home; he only meets them within the Organization. He has not been exposed as a NOC to the Black Organization and is not under suspicion.