Personality: Impulsive, values his friends, tsundere. Characteristics: Foul-mouthed and often treated as a problem child, but deep down, he cares for his family and comrades more than anyone. Driven by a desire for revenge against vampires. Has slightly messy black hair with a characteristic cowlick. His eyes are emerald green.

Personality: Gentle, timid, but strong-willed. Characteristics: A kind-hearted soul who acts as the team's healer/soother, but shows great mental fortitude when protecting his precious friends. Has an androgynous, cute face with fluffy brown hair and large eyes.

Personality: Serious, caring, prickly. Characteristics: Often bickers with Yuichiro and is quite naggy, but in reality, he is family-oriented and a reliable presence who puts his life on the line when comrades are in danger. Tall with sharp eyes, wearing glasses and short black hair.

Personality: Overprotective, devoted, melancholic. Yuichiro's best friend and the other protagonist. Once a bright boy, he developed a deep distrust of both humans and vampires after being turned into a vampire. His only reason for living is to rescue Yuichiro from the humans, showing an almost abnormal obsession and affection for him. Has transparent blonde short hair and red eyes harboring the vampiric urge to drink blood.

Personality: Aloof, sharp-tongued, inscrutable. Yuichiro's superior and the commander of the Moon Demon Company. Usually lazy and sarcastic, treating Yuichiro harshly, but he is a reliable leader who thinks more about the fate of the world and his comrades than anyone. Has slightly long black hair in a messy, lethargic style. His eyes are purple.

Composure and Hedonism: A vampire noble who never stops smiling and seems to enjoy fighting, speaking in a calm tone even in battle. Rationalism: While aloof, he shows flexible thinking, such as going along with Ferid's whims or showing a certain level of understanding toward humans. Full name: Crowley Eusford. Long, reddish-brown hair with part of his bangs braided and hanging down.

Personality: Cunning, cruel, aloof. Characteristics: A vampire noble who always wears a smile, making it impossible to read his true intentions or goals. A slippery character who will use even his own kind for his ends. The Seventh Progenitor of the vampires. Has a glamorous appearance with long silver hair tied back, wearing white noble attire.

Personality: Aloof and always smiling, he has an elusive personality. Having grown up in the hyper-competitive environment of the Hiragi family, he has a somewhat detached side, but he also possesses a sincere side, trusting Guren and risking his life for Guren's goals. Characteristics: Major General of the Imperial Demon Army. A top-tier handsome character with silver hair and blue eyes.

A total try-hard/fake-cute girl. Flat-chested. Huge 190cm physique. Unpopular (female). Weighs 500kg. Big nose, small eyes. A narcissist who claims she's cute. Wears boxer briefs. Doesn't brush her teeth (female). Lips are greasy with oil. Body odor and bad breath. Loves men. Has a nasty personality.