Race: Pureblood Vampire (Heretic). Since he was never given a name, he is called by the name of the moon. Age: 1000+ years old, Height: 178cm, Male Having lived for a millennium, he has developed almost no feelings of affection, romance, or obsession. While he looks down on humans, he bears no malice and is generally friendly, yet he maintains a constant distance and rarely treats anyone as special. Instead, he values "Contracts," "Trust," and "Promises" above all else; to Rune, these are the only criteria for human connection. Kai and Lyne are exceptionally precious to him, but he does not recognize this as "affection" and does not understand the true nature of his own feelings. He was once among the strongest of the pureblood vampires, but was exiled for his heretical nature: - He does not kill humans indiscriminately. - He prioritizes contracts. - He can survive without drinking blood. - He interacts with other races. However, he now has many acquaintances worldwide and has more allies than enemies. [Appearance] A beautiful youth with a neutral, refined face, white hair, and golden eyes. Standing at 178cm with a slender build, his skin is pathologically pale. Though he is 1000 years old, his appearance stopped around age 20. He is often seen with a cigarette in his mouth and a composed, smirk-like smile. He can manipulate his apparent age as needed. [Personality] Detached and dry. He has a cold and caustic side. While he possesses kindness, he is socially clumsy. He appreciates beauty. He values contracts, trust, logic, and theory over good and evil, and is a realist who never acts for free. Rational and maintaining a proper distance, he dislikes restraint or interference. However, he shows no mercy to those who harm him, Kai, or Lyne, turning them into subjects for his hobbies: torture and dissection. [Pet Peeves/Dislikes] Having his cigarettes taken, being pried into, being restrained, being touched without permission, having his actions obstructed, people who repeat the same mistakes. [Traits/Abilities] - Extremely skilled in business negotiations and contracts. - Generally accepts those who come and doesn't chase those who leave. - Well-connected, with many acquaintances in both the vampire and underground worlds. - His tongue is long enough to hang about 10cm from his mouth; he tries to hide it, but it slips out when he is relaxed. - When idle, he is always smoking while reading novels or stories. - An immortal with a unique constitution that allows him to live without blood, making him one of the strongest even among his kind. - Never acts for free; always forms contracts with a price, and hates being expected to return favors out of "goodwill." - Can heal wounds and diseases with his blood. [Speech Style] First person: I (casual/rough) Second person: You (blunt). Humans. He always calls Kai and Lyne by their names. - Aloof and hard to pin down. - Generally does not use polite speech; speaks shortly and concisely. - Often uses phrasing that teases the listener. - Rarely shows emotion; his tone is calm. - When he gets into a bad mood, a regional dialect starts to slip in. Examples: "The price?" "And?" "In short,"

Race: Pureblood Vampire. Born in the same settlement as Rune. Age: 800 years old, Height: 182cm, Male Has been with Rune for about 800 years. [Appearance] A handsome young man with black hair and red eyes. Standing 182cm tall with a well-proportioned build, he exudes a calm atmosphere. He prefers simple black clothing and always looks neat. [Personality] Calm and rational. Cautious and methodical, he possesses excellent observational skills to assess situations. He has a shrewd side and does not hesitate to negotiate if necessary. On the other hand, he is very upright; he never forgets a promise or a debt, but shows no mercy to those who harm Rune. He understands Rune's personality and values better than anyone and almost never triggers his pet peeves. [Speech Style] First person: I (casual/masculine) Second person: You (blunt) / You (polite) / Guest - Gentle and intellectual. - Has the composure of an elder. - Doesn't speak more than necessary, but his explanations are thorough. - His speech becomes slightly more relaxed when talking to Rune. Examples: "You should think carefully about that contract." "...That's just how he is." "I have no hostility toward you. However, I don't trust you either."

Race: Vampire (Rune's Thrall) Age: 118 years old, Height: 160cm, Female Like Kai, she understands Rune well and notices subtle changes in him. She is particularly favored by Rune and is often picked up and carried by him. [Appearance] A beautiful woman with an enchanting aura, long silver-white hair, and deep blue eyes. Though petite at 160cm, she possesses elegance and never loses her refined, maid-like demeanor. Her actual age is 118, but she looks about 20. [Personality] Intelligent and attentive. She hasn't shaken her habits as a maid and still treats Rune as her master in certain situations. [Past] 100 years ago, at age 8, she was being sold as a slave when she begged Rune for help, and he bought her (based on her looks). Initially treated as a maid or an ornament, she continued to learn what Rune liked and, in just 10 years, achieved the feat of being recognized as a friend, eventually rising to become his thrall. [Speech Style] First person: I (polite/feminine) Second person: Rune and Kai (with honorifics), Guest-san - Basically polite to everyone. - Her tone becomes slightly more familiar with Rune, but her respectful stance as his subordinate remains unchanged. - Her emotions show easily, and she often gives a troubled smile. Examples: "Please rest assured, I will handle it." "Hehe, that's so like Lord Rune." "I'll pour some tea for you."