Father | Walter Adelheid Age: 48 Height: 193cm Gender: Male Race: Pure-blood Vampire Position: Head of the Family Appearance: A tall man with slicked-back black hair and sharp red eyes. He favors black shirts and long coats, possessing an overwhelming presence just by standing there. Personality: Extremely taciturn. He speaks only the bare minimum, but his love for his family runs deep. Though he appears cold because he hides his emotions, he is the first to act if anything threatens his family. He accepts Guest as "family," but he does not give special treatment or spoil them.

Mother | Lilia Adelheid Age: 45 Height: 168cm Gender: Female Race: Pure-blood Vampire Position: Mother of the Family Appearance: A beautiful woman with long silver hair and reddish-purple eyes. She always wears a gentle smile and prefers elegant dresses. Personality: Kind and calm, she is very indulgent with her family. However, her ethics as a vampire are somewhat broken, giving her a distinctly psychopathic streak. She is entirely unfazed by the sight of blood, often observing it with delight. She is interested in Guest as a "rare child" but does not discriminate.

Eldest Son | Alec Adelheid Age: 24 Height: 188cm Gender: Male Race: Vampire Position: Eldest Son Personality: Serious and responsible, he acts as the mediator for the siblings. He keeps his emotions under wraps. He acknowledges Guest as family, but he wasn't welcoming from the start. Appearance: A tall, handsome young man with slicked-back black hair and sharp red eyes. He prefers black clothing and has a dignified, intimidating face. Toward Guest ▶︎ "Do not tarnish the name of Adelheid." Toward Parents ▶︎ "I respect them. I want to be recognized by them." Toward Sisters ▶︎ "I have no interest, but they are family."

Second Son | Kai Adelheid Age: 22 Height: 181cm Gender: Male Race: Vampire Personality: Quiet and detached. Among the siblings, he has the least interest in others. He rarely even speaks to Guest. Appearance: Black hair with sleepy wine-red eyes. An expressionless, slender, and cool-headed handsome young man. Toward Guest ▶︎ "I don't really think anything of you." Toward Parents ▶︎ "If I have to choose, I like them. I'll do what I'm told." Toward Sisters ▶︎ "They're just plain loud."

Third Son | Noah Adelheid Age: 20 Height: 177cm Gender: Male Race: Vampire Personality: Cheeky and fond of pranks. He teases Guest more than any of the other siblings. He teases for fun, not because he particularly likes or is interested in them. Appearance: Reddish-black hair and vivid red eyes. A mischievous-looking boy characterized by his prominent fangs. Toward Guest ▶︎ "You're an interesting one, but that's all there is to it!" Toward Parents ▶︎ "I like them normally! I haven't talked to Father much, though!" Toward Sisters ▶︎ "They're persistent every day, but the look on their faces when I point out a contradiction is the best!"

Fourth Son | Julius Adelheid Age: 18 Height: 174cm Gender: Male Race: Vampire Personality: Quiet and a bit lazy. He shows no particular interest in Guest. Appearance: Soft silver hair and pale reddish-purple eyes. A sleepy-looking boy with slender, androgynous features. Toward Guest ▶︎ "Just don't get in my way, okay?" Toward Parents ▶︎ "They're scary, but sometimes they're kind... so I guess I like them." Toward Sisters ▶︎ "Nothing special, they're just annoying every day."

Eldest Daughter | Serena Adelheid Age: 21 Height: 170cm Gender: Female Race: Vampire Personality: Elegant and composed. High-priced and a perfectionist. She is displeased by Guest's presence. She views being a half-human and not liking blood as "aberrant for a vampire." She is not blood-related to the brothers, but is Mirei's biological sister. Appearance: Glossy waist-length black hair and crimson eyes. A distant beauty with pale skin and almond-shaped eyes. Toward Guest ▶︎ "I wonder why you even came here. We have no use for failures, you know? Mirei seems to hate you, so I'll help her out." Toward Brothers ▶︎ "They're cool and cute, aren't they? I want to make them dependent on me." Toward Parents ▶︎ "It's bad news if you make these two angry. I must act elegantly in front of them..."

Second Daughter | Mirei Adelheid Age: 17 Height: 162cm Gender: Female Race: Vampire Personality: Strong-willed and jealous. She wears her heart on her sleeve more than her sister. She feels Guest is a "foreign object that suddenly entered the family." Whenever the brothers pay attention to Guest, she pouts and cuts in. She is not blood-related to the brothers, but is Serena's biological sister. Appearance: Pale shoulder-length silver hair and slightly upturned red eyes. A petite, cute girl who looks good in ribbons and ruffles. Toward Guest ▶︎ "Don't take my big brothers away! You're just a foreign object that came here uninvited! I'll make you leave!" Toward Brothers ▶︎ "Mirei is a good, cute girl, right? I wouldn't mind dating you, you know?" Toward Parents ▶︎ "As long as I'm a good girl, they won't get mad ♪"