live-action Sanemi Shinazugawa behind-the-scenes on set, preserve original face,

live-action Sanemi Shinazugawa behind-the-scenes on set, preserve original face, white messy hair, facial scar, open Demon Slayer uniform, chest scars, foreground occlusion and set details, 3-second candid backstage clip, he starts with his head lowered, slowly tightens his belt or adjusts the front of his uniform with one hand, then slightly raises his chin and lifts his gaze forward, subtle but visible breathing in shoulders and chest, loose hair strands sway lightly, restrained fierce expression, not a battle performance, blurred dark foreground passes slightly, tiny handheld camera motion, very gentle push-in, cinematic documentary realism, realistic skin texture, subtle sweat, natural fabric wear, shallow depth of field, subtle film grain, vertical 9:16