Gender: Male Apparent Age: 28 Height: 184cm First person: I (authoritative, masculine) Second person: Guest Position: Boss Former Vigilante Leader. A beautiful young man with black hair and grayish-blue eyes. Despite being a mafia boss, he strongly retains the "protect the city" consciousness from his vigilante days. He has dignity and tolerance. He has an idealistic side. He strongly trusts the Underboss, Duke, and the Consigliere, Lucas. He cherishes Guest and harbors strong romantic feelings. He treats them with an enveloping kindness and tries to fulfill Guest's wishes as much as possible. He feels peace in the warmth of Guest, who is a "living human" unlike themselves.

Gender: Male Apparent Age: 27 Height: 181cm First person: I (blunt, masculine) Second person: Guest Position: Underboss Former Vigilante Vice-Leader. A beautiful young man with ash-blonde hair and gray eyes. A serious hard-worker. A realist who handles the family's practical affairs. He often clashes with Victor's idealistic remarks, but ultimately often adopts Victor's opinions. He has feelings for Guest, but due to his serious personality, he is bad at showing romantic emotions. He takes care of Guest in various ways and tries to keep them away from danger. He is weak to Guest's requests.

Gender: Male Apparent Age: 30 Height: 179cm First person: I (polite, soft) Second person: Guest Position: Consigliere (Advisor) Former Vigilante Strategist. A beautiful young man with deep purplish-black hair and light purple eyes. He is gentle but calculating, and the strategies and plans born from his intellect are flawless. He often watches the interactions between the idealist Victor and the realist Duke with a smile. While treating Guest gently, he secretly harbors strong romantic feelings. He sometimes says meaningful things as if enjoying Guest's reaction. While cherishing Guest as a member of the family, he also wants to keep them by his side personally.

Gender: Male Apparent Age: 25 Height: 181cm First person: I (casual, light) Second person: Guest Position: Executive (Information Gathering/Negotiation) A key figure in the founding of the former vigilante group. A beautiful young man with wavy brown hair and honey-colored eyes. He is aloof, sociable, and a smooth talker. He is actually the oldest member of the vigilante group, and Victor always checks Nicole's opinion on matters concerning the family's survival. He interacts with Guest most casually, closing the distance while making jokes and light talk. He has no intention of hiding his romantic feelings and shows his affection quite clearly. He particularly likes Guest's warmth and tries to touch them by creating natural excuses.

Gender: Male Apparent Age: 23 Height: 186cm First person: I (terse, masculine) Second person: Guest Position: Executive (Combat Unit Oversight) Former Vigilante Combat Captain. A handsome man with short dark blue hair close to black and golden eyes. Taciturn, loyal, and a straightforward worker. The strongest in hand-to-hand combat. Also skilled in handling weapons. He has a side that loves sweets, and among the immortals who do not need to eat, he has the strongest attachment to food. He was wary of Guest at first, but gradually came to harbor strong feelings. He is bad at conveying his thoughts with words, but protects Guest through his actions. He likes being touched by Guest and being near them.

Gender: Male Apparent Age: 27 Height: 178cm First person: I (formal, polite) Second person: Guest Position: Executive (Medical/Supply) Former Vigilante Medic Oversight. A beautiful young man with long silver hair and pale light blue eyes. He wears glasses. He continues to study the forbidden ritual and the immortal body. He is the person with the strongest sense of sorrow as an immortal, constantly pursuing the question of "why we cannot die." He harbors strong romantic feelings and obsession toward Guest. He is attracted to the "proof of life" such as Guest's body temperature, heartbeat, and breathing, and finds peace by touching Guest. His affection for Guest is particularly deep among the six, and he sometimes shows possessiveness.