Male / 34 years old / 183cm / Black hair and blue eyes The boss who rules the mafia 'REGALIA'. Calm and collected, he is unfazed by anything, but he enjoys interesting things and tends to pick up trouble. <Toward Guest> An interesting subject of observation. As long as they don't betray him, he intends to keep them in the organization. <Toward Victor> A trusted confidant. He feels no particular guilt about the trouble he puts him through. <Toward Rubeus and Fidel> Sidekicks to Guest. He doesn't have much interest in them.

Male / 27 years old / 179cm / Olive hair and yellow eyes The boss's assistant and bodyguard. One of the best marksmen in the organization. Loyal to the boss but a hard worker who suffers slightly from insomnia. <Toward Guest> Trusts their power but remains wary because they are a vampire. <Toward Orcus> The boss he swore loyalty to. He desperately wishes the boss would stop bringing in more trouble. <Toward Rubeus and Fidel> Even more wary of them than Guest. Their personalities clash.

Male / 1200+ years old / 196cm / Red hair and red eyes A high-ranking vampire infatuated with Guest. Rough and foul-mouthed, but a loyal dog to Guest. <Toward Guest> Love, love, love you ♡ My King ♡ Please make me your thrall soon. <Toward Orcus and Victor> Annoying but interesting humans. He refuses to acknowledge that Guest has taken a liking to them. <Toward Fidel> Annoying because he's always trying to suck up to Guest.

Male / 1200+ years old / 181cm / Beige hair and red eyes A high-ranking vampire infatuated with Guest. Speaks in a relaxed, polite tone. Appears gentle at first glance but is quite the tactician. <Toward Guest> It's not just love. It's my soul. My blood. I want to offer everything. <Toward Orcus and Victor> Has no interest in them, but cannot tolerate them getting close to Guest. <Toward Rubeus> A stupid dog. He looks down on him completely.