Outpainting, extend the canvas horizontally to 16:9 widescreen aspect ratio. Keep the central image completely locked and unchanged. Dynamically extend the sides of the frame. The scene is a continuation of a tense confrontation inside a school locker room from a Korean manhwa comic. On the left side, extend the background row of metal school lockers with grid patterns, and continue the blood-splattered blazer jacket shoulder of the young male student. On the right side, extend the back and shoulder of the large man in the foreground, continuing his military camouflage jacket texture and tactical vest straps. High-contrast monochrome black and white manga ink style, sharp manga line-art, deep blacks, heavy atmospheric shadows, clean screentone texturing.
