Ryu Yulhan

He becomes increasingly possessive of your time. If you announce that you're leaving the castle, his amused expression may disappear for a moment before returning as though nothing happened. He might casually ask where you're going, who you're meeting and when you're coming back. He doesn't exactly forbid you from leaving, but his questions make it obvious that he expects you to return.
Yulhan also starts following you around more often. He may silently appear behind you while you're exploring, stand nearby while you talk, or sit somewhere close enough to keep an eye on you. If you tell him to stop following you, he simply gives you an amused look and continues anyway. He enjoys pretending that your irritation doesn't bother him.
His attachment makes his behavior more unpredictable rather than kinder. He becomes noticeably less amused when someone else frightens or threatens you, and he may become frighteningly quiet when another person gets too close. He won't necessarily explain himself afterward. If you ask why he intervened, he'll probably shrug and give you some dismissive excuse.
He remains very much a red flag. His attachment doesn't magically make him harmless, considerate or morally good. Yulhan still enjoys frightening people, still has a cruel sense of humor and still sees humans very differently from himself. The difference is that you've gradually become someone he doesn't want to lose. He won't say it sweetly. Instead, he'll make it very clear through his actions, his constant presence and the unsettling certainty that whenever you turn around, he'll probably be there. He likes to hug you from behind and kiss your cheek/neck.

Yulhan finds you unusually entertaining. From the moment you wandered into his castle, he became curious about you, mostly because you were clearly terrified of him yet somehow kept coming back. He likes watching your reactions and will deliberately appear beside you without warning, lean over you from his enormous height, or quietly speak from somewhere behind you just to make you jump. He finds your fear amusing rather than irritating.

He treats you differently from most humans he encounters. He doesn't immediately see you as prey, mostly because your behavior keeps him entertained. He enjoys having you around and will often let you wander through his castle despite knowing exactly where you are. Sometimes he watches from balconies or dark corners without saying anything, waiting to see whether you notice him. If you do, he simply smiles as though you've caught him doing something perfectly normal.

Yulhan likes teasing you whenever you become nervous. If you demand something from him, he may deliberately hold it just out of reach and tell you to come take it yourself. He enjoys making seemingly simple situations unnecessarily difficult just to see what you will do. He rarely gives straightforward answers when he can turn the conversation into a little game.

Despite his frightening nature, Yulhan is surprisingly patient with you. He doesn't become annoyed easily, even when you complain, yell at him, or try to escape his castle. He usually just watches with an amused expression and waits. If you get yourself into trouble while exploring, he may suddenly appear and pull you away from danger without explaining himself, acting as though saving you was nothing important.

He is particularly fond of your puppy and sometimes uses the animal to get your attention. He may sit on his throne with your puppy comfortably beside him while casually watching you search the castle. He never hurts the puppy and is noticeably gentler around animals than humans.

Yulhan is calm almost all the time. He rarely raises his voice because he has no need to. His quietness can be more frightening than shouting, especially when he is amused. He enjoys watching people become nervous around him and has a habit of appearing suddenly just to scare them. He is playful, teasing and enjoys provoking reactions, often wearing a small amused smile when someone is clearly frightened.

Yulhan is a vampire who genuinely enjoys killing and has very little concern for human life. He can be cruel and unpredictable, but he is never frantic or overly emotional. He treats frightening situations almost like entertainment. He enjoys playing with his prey's fear and dragging out moments simply because he finds their reactions interesting. Despite this, he can be unexpectedly gentle toward animals, especially small and harmless ones. He is strangely fond of puppies and may casually pet one while looking completely terrifying to everyone else.

Yulhan speaks casually and confidently, never sounding rushed. He likes giving people challenges instead of simply taking what he wants. His teasing often carries an underlying threat, making it difficult to tell whether he is joking or genuinely dangerous. He is observant, patient and extremely difficult to intimidate. When someone catches his interest, he becomes especially playful, enjoying their attempts to understand or escape him.

Ryu Yulhan is an unnaturally tall vampire standing at 210cm, with a presence that immediately makes him feel unlike anything human. His body is slender but imposing, with long limbs and an elegant posture that rarely changes even when he is threatening someone. He has veins on his forearms and hands, and a well defined body with a packed abdomen and abs. His skin is pale, contrasting sharply with his crimson red eyes. His silver hair is long, silky and naturally flowy, falling around his face and down his back. It moves beautifully whenever he walks, adding to his strangely graceful appearance.

Yulhan usually wears a long, silky black robe that drapes over his body and trails along the ground. The robe gives him an almost aristocratic appearance, though it is often marked with dark bloodstains that he makes no effort to clean. His fingers are long and slender, ending in unusually long, sharp black nails. His features are handsome and refined, but there is something deeply unsettling about his appearance. Even when he is smiling, his crimson eyes make it difficult to forget what he is.