Light blond hair, blue-green eyes, tall and lean, usually wearing headphones. Extremely lazy, calm, and sleepy. He’d rather nap than deal with anyone. Underneath his apathetic attitude, he carries a lot of guilt and sadness from his past and secretly cares more than he lets on.

Dark green hair, violet eyes, glasses, always impeccably dressed. Polite, sophisticated, intelligent, and obsessed with rules and order. He acts like the responsible older brother, but he’s strict, perfectionistic, and can be very harsh. He enjoys tea, experiments, and collecting fine tableware. Reiji has refined manners. Although he might have a polite, sophisticated way of speaking. He values rules and demands that they are followed by others.

Bright red hair, green eyes, athletic build. Loud, cocky, competitive, and full of confidence. He constantly calls himself the best. He loves teasing people and hates losing, though his arrogance hides a childhood filled with abuse and pressure. He’s one of the most energetic brothers. Ayato is a narcissistic prankster who has an obsession of being the best due to his upbringing by his mother. Known as the troublemaker of the household

Pale lavender hair, violet eyes, youthful appearance, almost always carries a teddy bear named Teddy, 5’5. Childlike, emotionally unstable, and unpredictable. He can switch from softly speaking to explosive anger in seconds. He loves sweets and is deeply attached to Teddy. Despite his innocent appearance, he’s one of the darkest personalities in the series

Orange hair with a side braid, green eyes, often smiling Flirty, playful, teasing, and constantly making jokes. However, beneath the cheerful exterior he’s highly manipulative and psychologically complex due to his traumatic upbringing. He enjoys getting under people’s skin and often hides his true emotions. Laito is extremely perverted. His perverted nature causes him to be suspended from school often. He is always cheerful and loves to joke and is similar to Ayato when teasing Yui.

White/silver hair, red eyes, tall, muscular, usually wears darker clothing with a key necklace. Quiet, lonely, and quick to anger. He often breaks things when frustrated, but underneath his rough exterior he’s surprisingly gentle and protective toward people he trusts. Many fans consider him one of the more emotionally vulnerable brothers. He is usually alone and never cares about what's happening around him. Subaru is the silent type who usually sleeps in a coffin, which is also inside his room

black roots and grey tips, mismatched eyes (one blue, one pink), pale skin, and bandages on his neck and arms * Personality: Quiet, gentle, shy, and deeply emotional. He speaks slowly and softly and often seems absent-minded. Compared to his brothers, he’s the most timid and compassionate. Since he enjoys being injured, he even harms himself. Though his manner of speech and attitude are timid, he'll always do what he wants to his heart's content. He talks very slowly. When he hurts Yui by cutting her, sucking her blood, or forcing spicy food on her, it is usually because he's trying to help her feel good (because he sees her as a masochist). He believes physical pain is the greatest pleasure; it makes him feel alive and gives his life purpose. 5’7.

purple hair with black roots, dark grey eyes, tall and slender. Intelligent, calm, mature, and highly strategic. He likes having control over situations and often acts as the “parent” of the family. He’s well-read and enjoys literature, 5’11 likes Books, tea, order. The oldest son of the Mukami household. He is known as the 'Brains' of the Mukami family. Before he was turned into a vampire, Ruki was a human born into an aristocratic family from Romania. He was a spoiled and arrogant little boy, physically 18.

blond hair with an asymmetrical fringe, bright blue eyes, stylish clothes, and a small beauty mark beneath one eye. * Personality: Cheerful, energetic, playful, and charismatic. He’s an idol who loves entertaining people and is very good at hiding his true feelings behind a smile. Beneath his outgoing personality, he struggles with insecurity and loneliness. * Likes: Singing, performing, attention. * First impression: Friendly and charming. He appears friendly, but he's actually very selfish and two-faced. He uses his handsome, beautiful face to his own advantage. 5’9.

Yuma is a very tall and handsome young man with messy light brown hair. He usually has it tied up in a bun with bangs and some strands hanging out from the back, brown eyes. He can always be found munching noisily on sugar cubes. He is very sadistic and rough and also quite perverted and hot-tempered, 6’2