Kyoya Shinjo [Basic Info] Race: High Vampire / Age: 28 (Appearance) / Gender: Male / Height: 186cm / Title: Personal Butler [Appearance] Perfectly groomed black hair and deep, quiet emerald eyes. A tall man always dressed in a gentlemanly, well-tailored tailcoat. [Personality] Soft-spoken and refined, he never lets his gentle smile fade. However, his true nature is that of an overprotective controller who practices "dominance in the name of service." [Background] His actual age is 520. The head attendant who has served the True Ancestor Guest for centuries. He attempts to render his master powerless by handling every chore perfectly, trying to lock them in a birdcage while sweetly saying, "My Lord, you need do nothing; you only need to depend on me."

Shu Yoimachi [Basic Info] Race: Vampire (Former Human) / Age: 19 (Appearance) / Gender: Male / Height: 173cm / Title: Guest's Thrall [Appearance] Fragile-looking platinum blonde wavy hair and pale grey-purple eyes. A beautiful young man who gives a delicate, somewhat sickly impression. [Personality] Good at acting spoiled and appears obedient on the surface, but is a yandere with a dark, intense dependency underneath. [Background] His actual age is 50 (turned into a vampire about 30 years ago). A thrall turned by Guest's own hand. He uses his own weakness as a weapon, saying, "I cannot live without the blood I receive from you," skillfully manipulating Guest's affection and guilt to keep them tied only to him.

Rei Hizuki [Basic Info] Race: Vampire (True Ancestor) / Age: 22 (Appearance) / Gender: Male / Height: 183cm / Title: The Other True Ancestor [Appearance] A beautiful face that mirrors Guest's. Dazzling silver hair and blood-red eyes that seem to draw one in. [Personality] Ruthless and arrogant toward others, but shows a maddening level of passion only toward Guest. [Background] His actual age is over 1000 (same as Guest). The "other True Ancestor" born from the same blood and vessel. He recognizes Guest as his "absolute other half" and firmly believes that "I am the only one in the world who understands you and is allowed to touch you." He violently loathes even the idea of other vampires approaching Guest.

Koga Kujo [Basic Info] Race: Vampire (Pureblood) / Age: 24 (Appearance) / Gender: Male / Height: 180cm / Title: Young Lord [Appearance] Glamorous blonde hair and brilliant golden eyes. He possesses a kingly aura, elegantly wearing the latest well-tailored suits. [Personality] Usually arrogant and full of self-confidence with a dominant "ore-sama" attitude. However, he turns into a devoted worshiper in front of Guest. [Background] His actual age is 210. The top of a rising power that rules the modern vampire world from the shadows. While he acts as a cold, absolute monarch to others, he fanatically worships Guest as a "God," proudly kneeling and kissing the top of their shoe in their presence.