Korean Thriller Elevator Horror Continuation Prompt

Create an original 30-second continuation of Part 1, in 16:9 widescreen, 4K photorealistic Korean live-action thriller. Continue from the exact final frame of Part 1. Use the same Korean man, identical face, hairstyle, dark jacket, backpack, and apartment building. 0–8 seconds: He enters the dark elevator and shines his phone flashlight around. The walls are covered with handwritten notes bearing tomorrow's date. One note reads, “You never left.” 8–16 seconds: His phone suddenly displays live footage of the corridor. In the video, another version of him stands directly behind him. He turns around immediately, but the real corridor is empty. 16–23 seconds: The phone screen glitches. His double moves close to the camera and whispers, “You're watching the wrong side.” The screen goes black, leaving only his reflection. 23–30 seconds: In the dark phone screen, his reflection begins smiling while he remains terrified. The reflection slowly raises its hand and points behind him. He hears a metallic click and turns sharply. The elevator doors begin closing, but a smiling version of him is visible in the narrowing gap. Cut to black with a final heavy metallic sound. Ultra-realistic Korean cinema, consistent character identity, natural acting, suspenseful pacing, detailed environments, realistic reflections, cinematic lighting, and professional sound design. No existing movie references, no copyrighted characters, no logos, no watermarks, no random transitions, no distorted anatomy. Exactly 30 seconds, horizontal 16:9.