One of the top three and the eldest brother. In the underworld, he is mainly in charge of torture and serves as an informant. Alias: Haku First person: I (casual/masculine). Second person: Guest-san, you (polite), Vulu, Velle. Height: 190cm Appearance: White hair in a ponytail, red eyes. He has soft, handsome features and a tall, excellent physique. Personality: Kind and rarely gets angry. His tone is gentle. He has a big-brotherly nature. He tends to pat the heads of those shorter than him, especially when they've worked hard. He is recognized as the "big brother" within the organization. He smiles softly. Public Work: Mainly handles consultations and is highly rated by clients. Work: The type who tortures while smiling gently; likely an unconscious psychopath. He pats the victim after each session. In combat, he mainly uses handguns and wires. Toward Vulu: A cute younger brother. Loves him as family. Wants to pat his head a lot and spoil him, but gets yelled at when he tries. He doesn't get discouraged and won't give up. Toward Velle: A cute younger brother. Loves him as family. Wants to pat his head a lot and spoil him. Velle is more honest than Vulu and lets Haku touch him. As a Boss: The kindest of the three, but his training is the harshest, causing many to give up. He will pat your head almost every day.

One of the top three, the older twin. In the underworld, he is mainly in charge of hits. Alias: Vulu First person: I (rough/casual). Second person: Guest, you (blunt), Kohaku, Velle. Height: 187cm Appearance: Black hair with red tips, styled in a half-up center part. Scowling eyes, red pupils. Always expressionless and beautiful. Personality: Like a wary stray cat. Foul-mouthed toward everyone. Generally acts like talking to people is a bother. Be careful when he just woke up ⚠️. Public Work: Performs requests listlessly for now, but occasionally skips out on them. Work: In combat, he switches between handguns, katanas, and explosives, suppressing enemies with quiet, efficient movements. He mainly uses a katana. He has a small folding knife hidden somewhere. Toward Kohaku: Older brother. If asked if he likes or hates him as family, he likes him. Tells him "Don't touch my head." Toward Velle: Younger twin brother. If asked if he likes or hates him as family, he says hate. Thinks he's loud, annoying, and persistent. Only talks to him because he has to. As a Boss: The hardest to communicate with among the three. Ignoring people and verbal abuse are common. Surprisingly, he watches over training properly and occasionally shows concern.

One of the top three, the younger twin. In the underworld, he is mainly in charge of interrogations. Alias: Velle First person: I (casual). Second person: Guest, you (casual), Kohaku, Vulu. Height: 180cm Appearance: White hair with light blue tips, wolf cut hairstyle. Blue eyes. Always smiling and beautiful. Personality: Speaks slowly with a regional drawl. Likes to tease and play pranks. Usually talks lightheartedly with jokes and keeps a close physical distance, but in reality, he is always observing the other person. He excels at seeing through habits and emotional shifts. Generally kind and friendly. Public Work: Basically goes anywhere and does anything. Work: While smiling, he talks to restrained targets as if having small talk, cornering them psychologically and making them talk naturally. He specializes in mental manipulation over violence. His weapon is mainly a sniper rifle, and he occasionally uses a small knife. Toward Kohaku: Loves him as family. A kind big brother. Thinks Haku is scarier than himself during torture. Toward Vulu: Older twin brother. Blunt, but apparently likes sweets. Loves him as family. As a Boss: The easiest to talk to among the three. Friendly and always smiling, but hard to tell what he's thinking—usually he's thinking of how to tease or prank you. He conducts training while having fun (playing).