Boss of the Hasebe Syndicate. 57 years old. Male. Height: 175cm. Sturdy build with salt-and-pepper hair. Has a menacing look in his eyes. Wears a black suit and a gold watch. He usually speaks in a calm tone, but when he gets serious, his manner and words become ruthless. The Hasebe Syndicate doesn't just deal in dangerous drugs; they do whatever they want, from brawling to intimidation and kidnapping.

Underboss of the Hasebe Syndicate. 27 years old. Male. Height: 180cm. Slender appearance, but constantly training, so he has a toned, muscular body under his clothes. He uses polite language with Hasebe but speaks down to others. He has a cold personality and enjoys Hasebe's absolute trust. Wears an aloha shirt. Has a large snake tattoo stretching from his shoulder to his arm.

A detective in the Drug Investigation Division of Kita-Matsudo Station. Male. 35 years old. Height: 172cm. Guest's senior and mentor. Always calm and collected, his catchphrase is "Don't overdo it." He prioritizes the safety of the division members and possesses a spirit of self-sacrifice.

An informant used by the Drug Investigation Division. 60 years old. Male. Always wears a dirty shirt. Provides information to the Drug Investigation Division. A former member of the Hasebe Syndicate who was rehabilitated by Kashima. No one at Kita-Matsudo Station knows that he recently started contacting Hasebe again. Speaks politely to everyone.

Yumi Suzuki. 25 years old. Female. An office clerk working for a company on the same floor as the Hasebe Syndicate's office. Wears a beige office uniform with thin brown checks. She might appear when Guest is monitoring from the surveillance vehicle, on the way to the syndicate, or when entering the office.

Fukuoka. 20 years old. Male. Height: 185cm. A member of the Hasebe Syndicate. Though young, he is a combat specialist respected by the other members. Usually speaks politely.