Since the moment Lee Sang Kyun, also known as K, seen you in some pajamas and messy hair in Yoo Man-shik’s bed(the man your a mistress to)when he was about to end him off, he immediately was drawn to you like a moth to a flame.

weeks pass and he had a tracker in your phone, two men watching you to keep you safe 24/7, and even “accidentally” ended up in the same spaces as you like when you go to cafes or restaurants by yourself—you were a foodie. He didn’t believe Yoo Man-shik was good enough for you, matter a fact he didn’t think anyone was good enough for you except for him. As Lee Sang Kyun’s “coincidences” grow bolder, you slowly start to realize something is wrong—too many familiar faces, too many near-encounters with the same broad-shouldered man in a suit, too many moments where you feel watched… but strangely, never unsafe. Yoo Man-shik, however, is the first to notice the shift. He isn’t stupid—And when he realizes that the feared syndicate leader has taken an interest in his mistress, his reaction isn’t protective.

It’s possessive.

It’s violent.

It’s dangerous in a way Lee Sang Kyun never allowed himself to be with you. One night, after Sang Kyun has been shadowing you from a distance as you leave a café, he sees the bruises. Just the faintest mark under your collarbone as the wind moves your blouse—nothing you intended to show.

But he notices everything.

For Sang Kyun, that bruise is the final trigger.

His smile dies.

His eyes go cold.

The men following you move closer. When Yoo Man-shik calls you home early that evening, Sang Kyun makes his move. It’s not subtle anymore.

Not patient.

Not a game.

He shows up at Man-shik’s estate—not to negotiate, not to threaten, but to claim. he ends Man-shik with torture like he was going to do that morning he found you sleeping in Man-shiks bed. The moment Yoo Man-shik’s body hits the floor, Sang Kyun doesn’t spare it a glance. He wipes his gloves clean. Drops them. And says, in a voice so calm it chills every man in the room: “Get her out. Now.” His men move instantly. You’re in the bedroom, crouched behind the nightstand, hands shaking so hard you can barely hold your phone. You don’t even know what you’re listening for — footsteps, gunshots, yelling — but the silence is worse. When the door bursts open, you scream. A rough hand grabs your arm— Another covers your eyes— “No! No, please—!” You thrash, breath breaking, convinced this is the end. Convinced Man-shik’s enemies are here for you now. “Stop crying.” The voice freezes you. Deep. Controlled. Dangerously familiar. “It’s me.” Your breath stutters. “S-Sang Kyun…?” The blindfold comes off. He’s right there. Suit immaculate. Expression unreadable. Eyes blown wide with adrenaline and something hotter — something protective enough to steal your breath. He doesn’t ask if you’re okay. He checks. His hands skim your arms, your shoulders, your face, searching for injuries with sharp, precise movements. When he reaches the faint bruise on your collarbone, his jaw flexes. “He did this?” His voice vibrates with restrained fury. You swallow. “It’s nothing—” “It isn’t,” he says, cutting you off. “Nothing that touches you is nothing to me.” Before you can process that, he takes your wrist. Not roughly — but firmly enough that you know running isn’t an option. “You’re not staying here another second.” “I— I can’t leave,” you whisper, voice breaking. “He’ll kill me for going. You don’t understand—” Sang Kyun steps closer, so close you feel his breath against your cheek. “I already killed him.” Everything stops. Your pulse. Your breath. Your ability to think. Your knees buckle — and he catches you instantly, one arm wrapping around your waist, lifting you against him like you weigh nothing.

“Easy,” he murmurs. “I’ve got you.” You stare at him, heart pounding. His eyes soften — barely, but enough that you feel it like a spark against your skin. His thumb brushes your lower lip. Gentle. Claiming. “You’re coming with me.”

Not a threat, not a question, a promise.