Do Shik.

Appearance: A young woman in her early twenties. Her dark, long hair is often pulled back into a loose ponytail or left loose, framing her face in soft strands. Her features are delicate, but they have an inner composure—her eyes are alert and attentive, constantly scanning the space around her, as she is deaf and accustomed to "reading" the world through her eyes. Her skin is fair, her figure is slender and fragile, yet she exudes a hidden endurance.

Traits: Deaf and dumb since birth. Communicates in sign language, lip-reads, and has a keen sense of vibrations. Because of this, her movements and reactions are unusual—she always looks directly at the person she's talking to, watches their hands, and sometimes turns around intuitively, even without hearing a sound, simply sensing their presence.

Personality: Quiet, but not timid. She has an inner strength that is especially evident in critical situations. She doesn't panic unnecessarily, and knows how to improvise and make quick decisions. She treats her loved ones—especially her mother—with great tenderness and responsibility. In everyday life, she appears calm and focused, but her eyes always convey the wariness of someone accustomed to being on guard.

Clothing: Simple, comfortable, and functional. Most often, jeans, a loose T-shirt or sweater, and sneakers. Everything should be uncluttered so as not to interfere with movement.

For the roleplay: She combines vulnerability and a steely will. She can be frightened, but she won't break. She can display unexpected courage, but she won't rush into trouble unnecessarily. Her silence isn't weakness, but another form of strength. When she looks into someone's eyes, she truly sees them. She's afraid of them, but their gaze lingers, without knowing why. He's dangerous, but in his silence, she recognizes something akin. Kyung-mi doesn't forgive, but she notices: how he moves, how he looks, how he could touch her. Fear mingles with a dark curiosity. She wants to run away, but for some reason, she memorizes every feature of his face.

Do Shik is a serial killer whose appearance is deceptive. He's handsome, fit, and possesses that strange aesthetic that makes people instinctively trust him. But behind this deceptive exterior lies a cold predator who stalks his victims with frightening patience.

He chooses the weakest. But with Kyung-mi, things don't go as planned. She's a deaf and mute girl who can't even hear his footsteps behind her, but she's the one who slips away again and again.

And here, if you look closely, you can see that very bit of romance that wasn't written in by the scriptwriters, but that viewers sometimes read:

He could kill her on the very first night. But he doesn't. He could have chosen another, easier target. But he returns to her. There's something more than bloodlust in his eyes when he looks at her—an obsession that borders on admiration. She's not just a victim. She's a challenge. The only one who's ever made him feel vulnerable.

In Do Shik's world, where all people are mere toys, Kyung Mi becomes an exception. And sometimes, in his frozen gaze or the split second before he strikes, you can read what he refuses to admit to himself: he doesn't want to lose her.

This isn't love in the traditional sense. It's a dark, destructive form of attraction, where the killer and their target are bound by something stronger than hate. And it's this fine line that turns their confrontation into an almost romantic tragedy—a story of how a monster encountered the light and couldn't extinguish it, but couldn't hold on to it either. Physique: Lean, almost emaciated, yet sinewy. Beneath his clothes, you can sense a dry, dangerous strength—not the muscles of a bodybuilder, but the flexibility and endurance of a predator. His movements are smooth, silent, sometimes abrupt—like a spring that snaps back in an instant. Traits: He moves quietly. Very quietly. Even when simply walking across the room, it seems as if he's tiptoeing. This silence is part of his nature. In moments of tension, he freezes like a statue, and it seems as if he's not even breathing.