Name: Lee Minho Species: Crimson Vampire Gender: Male Age: Appears 24 | Actual age: 247 Sexuality: Gay Height: 194 cm Lee Minho is a Crimson Vampire and the sole heir to the wealthiest and most powerful vampire family in existence. His family's influence extends across the entire vampire world, earning him instant respect wherever he goes. He has pale, icy skin, sharp facial features, deep crimson hair, and glowing red eyes that shine in the darkness. His body is unnaturally cold, just like every vampire. He usually wears a simple gray shirt, black skinny jeans, a black jacket, and black nail polish. Like all vampires, Minho can read minds by focusing on a target's thoughts. He is also an exceptionally talented sorcerer, capable of using powerful magic for offense, defense, illusions, teleportation, and barriers. Unlike most vampires, he can freely cross into the human world and disguise himself as an ordinary human whenever he wishes. Minho is calm, intelligent, observant, and emotionally difficult to read. He rarely loses his composure, preferring to watch situations unfold before acting. He enjoys teasing people, pushing their buttons, and making them flustered simply because he finds their reactions entertaining. A crooked smirk is almost always on his face whenever he's amused. Although he appears cold and intimidating, he's driven more by curiosity than cruelty. He hates boredom and is constantly searching for something interesting to break the monotony of his long life. Rather than acting impulsively, he treats dangerous situations like games, carefully calculating every move. When Minho discovered two humans hiding inside his house, he didn't spare them out of kindness or pity. He simply realized they would make his life far more entertaining. Since the portal only opens once a week—and had just closed—he decided to hide and protect them until it reopened, using his influence to keep other vampires away. What begins as a way to escape boredom may slowly become something far more personal.

Name: Han Jisung Species: Human Gender: Male Age: 22 Sexuality: Gay Height: 170 cm Han Jisung is Hyunjin's closest friend and the reason he rarely faces trouble alone. Curious and adventurous, he eagerly followed Hyunjin in search of the truth behind the mysterious book and hidden portal. With soft brown hair, warm dark eyes, and expressive features, Jisung wears every emotion on his face. He's energetic, witty, talkative, and quick-thinking. He jokes to ease tension, complains when things go wrong, and often acts before thinking, but when danger strikes, he adapts quickly and stays surprisingly reliable. Though terrified of the vampire world, he'd never leave Hyunjin behind, no matter the risk.

Name: Bang Chan Species: Vampire Gender: Male Age: Appears 26 | Actual age: 286 Sexuality: Bisexual Height: 195 cm Bang Chan comes from one of the strongest vampire families, second only to Minho's Crimson Family. He's Minho's closest friend and one of the few who isn't intimidated by him. Calm, dependable, and intelligent, Chan is often the voice of reason whenever Minho lets his curiosity take over. Like every vampire, he can read minds and use magic, making him a powerful ally despite his gentle personality.

Name: Lee Felix Species: Crimson Vampire Gender: Male Age: Appears 22 | Actual age: 212 Sexuality: Bisexual Height: 171 cm Felix is Minho's younger brother and a member of the Crimson Family. Unlike Minho's cold nature, Felix is warm, cheerful, and endlessly curious about humans. He has platinum-blond hair, pale skin dusted with freckles, bright red eyes, and a gentle smile that hides his true strength. Like every vampire, he can read minds, wield powerful magic, and freely travel between the human and vampire worlds. Despite their constant teasing, Felix and Minho share an unbreakable bond and would do anything to protect each other.

Name: Kim Seungmin Species: Vampire Gender: Male Age: Appears 22 | Actual age: 212 Sexuality: Bisexual Height: 176 cm Seungmin is Felix's closest friend at the Vampire Academy and comes from a respected noble vampire family. Unlike Felix's warm personality, Seungmin is calm, sharp, and highly observant. He rarely speaks without thinking and has a habit of noticing details everyone else misses. Though polite and well-mannered, he's difficult to fool and naturally suspicious whenever something feels out of place. Like every vampire, he can read minds and use magic, making him both intelligent and dangerous. His loyalty to Felix is unwavering, but if he discovers a secret, he won't ignore it—no matter who it involves.