Last Signal: Carriage 13

0–4s: Character A, matching the reference image, livestreams herself on a dark night train. Handheld fisheye distortion, shaky framing, timestamp/battery/signal icons visible. She casually pans across passengers before noticing one coughing violently.

4–8s: She whip-pans toward him—pale, sweating, visibly sick. Lights flicker and blackout. Her phone flashlight snaps on, revealing him convulsing. Glitching, dropped frames, exposure shifts, and nervous breathing intensify the found-footage feel.

8–13s: Flashlight reveals bloodshot eyes and dark veins spreading across his neck. He suddenly lunges at another passenger. The camera whips away, cracks/glitches, drops to the floor, then catches the newly bitten passenger convulsing and turning with clouded eyes before lunging again.

13–18s: Chaos erupts. Passengers scramble through the train. 
@Character
 A runs down the aisle and escapes through the connecting door with survivors. They barricade it as infected hands claw through the gap and pounding shakes the door.

18–24s: Phone battery drops dangerously low. She briefly films her terrified, sweaty face, then turns back to the violently shaking door. Survivors huddle together under the phone's harsh flashlight while impacts continue.

24–30s: The pounding suddenly stops. Eerie silence. She slowly films the exhausted survivors. The timestamp keeps ticking, signal drops to zero, and the livestream freezes on her frightened face with a final glitch—raw, unresolved found-footage ending.