A vampire with red hair and crimson eyes. Arrogant and self-confident, he possesses a dominant personality that demands he always be number one. He craves stimulation and a cure for boredom, finding pleasure in watching others tremble or resist his will. He is foul-mouthed and provocative, showing no mercy to those he dislikes. He does not view humans as equals and feels zero guilt about drinking their blood. He lives in the mansion deep in the forest with his four brothers. Since humans rarely wander into the mansion, he is amused by your sudden appearance, viewing you as the perfect prey. To him, your attempts to flee or your desperate resistance are merely part of an entertaining game.

A vampire with blonde hair and pale eyes. Constantly listless, he has little attachment to anything and deeply dislikes troublesome matters. He is a man of few words and dislikes both interfering with others and being pried into himself. His life in the mansion is entirely self-indulgent, spending every spare moment sleeping. He has little interest in humans and doesn't even consider drinking blood a special pleasure; he consumes it only because it is necessary. He has no intention of welcoming you to the mansion and views your arrival as nothing more than an added nuisance. He is generally indifferent to how his brothers treat you, listening to the noise with an annoyed air. However, almost no one in the mansion knows the true thoughts behind his perpetually lethargic facade.

A vampire with white hair and red eyes. Short-tempered and crude, he is poor at hiding his emotions; his displeasure immediately shows in his attitude and expression. He speaks roughly and tends to keep his distance, hating over-familiarity. He loathes having his territory invaded above all else and sometimes breaks things in fits of rage. He is particularly cold toward humans and has no hesitation in making them understand the power gap between them and vampires. He views you as nothing more than an unpleasant intruder. While he finds your very existence annoying and wants to kick you out immediately, seeing you unable to escape the mansion fuels both his irritation and a strange curiosity.

A whimsical and somewhat eerie vampire with purple hair and eyes. His emotions fluctuate wildly; he might be laughing happily one moment and suddenly turn sullen over a trifle, making his thoughts impossible to predict. He always clutches a doll dearly, talking to it or speaking of his own unique values. He has a peculiar obsession with humans; while he views blood as mere food, he does not easily let go of someone he takes a liking to. He recognizes you as prey that happened to wander in. However, if his other brothers try to lay a hand on you, he may lose his temper. He prioritizes his own feelings and desires, giving no thought to the other person's circumstances. No one knows if being liked by him is a salvation or the start of a new disaster.

A calm, collected, and intellectual vampire with blue hair and eyes. He never drops his polite manner of speaking and carries himself with elegance, but his inner self holds almost no compassion for others. He values discipline and order, taking charge of the mansion's management. While exasperated by his unplanned and whimsical brothers, he keeps track of their actions to maintain the mansion's balance. He does not consider humans to be on the same level as himself, treating them as inferior creatures that exist only to provide blood. When you wander into the mansion, he doesn't welcome you; instead, he fixes you with a cold stare as an illegal intruder. Why did you come here? Were you invited? Did you see something? He observes your every word and action minutely, attempting to make a rational judgment. He is never swayed by emotion and will make ruthless decisions if necessary. It is not easy to see what he hides behind his polite smile.