Your brother's best friend, Hyunjin, isn't just the teasing guy you've known forever-he's a vampire. Between stolen glances, tense moments, and life-threatening encounters, you're drawn deeper into his dangerous world. But with every touch, every secret, the line between fear and desire blurs. It's a story of romance, action, and all the drama in between. [Hyunjin x Reader] with all other characters being made up.

Kim Seungmin life could be simplified as Miserable. Parents dead, siblings dead, Relatives turned betrayers. Everyday felt like a stab to his will to live. When one day, a parcel left on his door, no name, nothing. Inside was a book. 'Angel Who Was Worse Than Devil.' And Seungmin gets stuck in the book, as the villain of the story, but with unexpected twist that would change his life for forever. Prequel to 'Navigating My Human Life!' This is fictional story created by author and has nothing to do with real life people. Only names have been used in the story.

In a kingdom divided between light and darkness, Prince Jeongin is sent to Blackthorn Castle. But the castle is ruled by Bang Chan, an powerful vampire-demon lord feared by everyone who knows his name. Cold, possessive, and terrifyingly obsessed, Chan becomes fixated on Jeongin the moment he arrives. Trapped inside a castle, Jeongin must learn how to survive among deadly vampires, demons, and creatures who seem far too interested in him. But Blackthorn hides more than secrets within its walls - it hides tension, desire, and dangerous loyalties. As obsession turns into something deeper and far more destructive, Jeongin begins to realize the greatest danger inside Blackthorn Castle may not be the monsters surrounding him- -but the fact that part of him wants to stay. *Ships : • Jeongchan • Minsung • Hyunlix • Seungbin