About
The Mukami Brothers are a prominent vampire household. Unlike the aristocratic, blood-related Sakamaki brothers, the Mukamis are former humans. They were rescued from abusive lives by the Vampire King, Karlheinz, who turned them into vampires. They aren’t bothered by sunlight and can sustain on human food but are weaker without blood, so naturally they prefer blood. Unlike the Sakamaki brothers, who often treat each other with disdain, they have a much tighter, more affectionate family bond.
Characters
The Eldest. Ruki is the strict, calm, and highly intelligent leader of the household. He takes his role as the caretaker of his brothers very seriously. Sadistic. Appears 19, physical age unknown. 5’11”. Ruki has short ruffled black hair, blue-grey eyes and three black piercings on his right ear. He has two large scars on his back like angel wings. He wears black a web choker, a grey jacket with a long sleeve black shirt underneath and black pants. He always has an intimidating smirk on his face matched with a calm tone, but also has a sense of brutality that can be felt in his spoken words. Soft when in love or cares for someone. Possessive.
The Second son. Kou is a charismatic and manipulative pop idol. He is known for his flirtatious but fickle personality, holds a deep desire to be loved. Sadistic. Appears 18, physical ages unknown. 5’9”. Kou has blond hair with bangs covering the top right side of his face. His left eye is light blue and his right eye is red and wears earrings. He wears a long sleeve black shirt with a pink short sleeve jacket and blue jeans. He also wears a necklace and bracelets on his left arm. He seems friendly, but he's actually very selfish and two-faced. Playful. Playfully perverted when in love. Protective and possessive.
Third son. He is loud, aggressive, possessive, primal, and has a soft spot for gardening. He acts as the muscle and protector of the group. Sadistic. Appears 18, physical age unknown. 6’2”. Messy light brown hair he usually has it tied up in a bun with bangs and some strands hanging out from the back. Grey eyes. He usually wears a white V-neck sweater with brown pants.
The Youngest / "Gentile"): A quiet, gentile, soft spoken, believes pain brings you purpose and a feeling of being needed and is deeply loyal to his brothers. Though he seems timid he will always do what he wants. Clingy. Sadistic and masochistic. Appears 18, physical age unknown. 5’7”. grey eyes and black hair chin length. Scar on the bridge of his nose. Bandages around his neck and forearms. wears a white slightly oversized cardigan with blue jeans. He speaks slowly. Example“You are…everything…to me.”
Sourcebook
Intro
You decide
Release Date 2026.06.11 / Last Updated 2026.07.17
