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 school classroom interior from a Korean manhwa comic. Extend the character's shoulders, grey teacher's blazer, and white collared shirt to the edges. On the right side, continue the grid pattern of the classroom schedule calendar on the wall. On the left side, extend the subtle grey screentone gradient and the texture of the classroom wall. High-contrast monochrome black and white manga ink style, clean manga line-art, sharp screentone texturing, deep dramatic shadows.
