Young Korean woman wearing a fitted blue crop top and white shorts enters an old apartment-building elevator alone; a tired neighbor stands quietly beside her. The elevator doors close; fluorescent lights flicker while the woman stares at the floor, completely still. The floor indicator suddenly glitches; she slowly raises her head and looks toward the neighbor with an unsettling blank expression. Her fingers begin twitching violently; her shoulders jerk as if something is moving beneath her skin. She suddenly grabs the elevator railing, bends forward unnaturally, then collapses against the wall. The neighbor steps backward in fear and desperately presses the emergency button. She becomes completely motionless for a moment, then slowly rises with wide unfocused eyes, pale skin and unnatural posture. Her head tilts sharply to one side; her hands twitch while her breathing becomes heavy and irregular. The neighbor tries to force the elevator doors open, but they remain stuck between floors. The woman suddenly lunges forward and slams against the elevator wall, then turns toward the neighbor with a terrifying expression. The emergency lights switch to red as the elevator shakes and stops completely. The neighbor desperately crawls toward the control panel while she slowly approaches from behind. The elevator suddenly drops a few inches; both stumble as the lights flicker violently. The doors finally open halfway, revealing a dark apartment hallway outside. The neighbor squeezes through the opening, but the woman suddenly rushes forward and crawls underneath the closing doors. The neighbor runs down the hallway as the creature follows with fast, unnatural movements. A resident opens their apartment door, sees the creature approaching and immediately slams the door shut. The creature stops, slowly turns toward the camera, then suddenly charges down the hallway. The hallway lights flicker one by one as the camera backs away toward the stairwell. The elevator doors remain open behind her, completely empty, while a faint distorted breathing sound comes from inside. Ultra-realistic Korean apartment elevator horror, claustrophobic handheld camera, flickering fluorescent and emergency lighting, realistic skin and facial expressions, unnatural but physically believable body movement, tense pacing, realistic elevator reflections, subtle camera shake, natural motion blur, cinematic but grounded, practical-effects horror, no gore, no blood, no explicit injuries, no subtitles, no watermark, no CGI look.