Keep background 100% unchanged: scene, buildings, streets, light, materials, and camera angle exactly as original. Replace only people with black-and-white hand-drawn sticker art: rough single-line strokes, pure black/white only, no gray, small solid-black blocks for hair and folds, and a clean white outline like a cut-out sticker. Preserve pose, action, direction, count, proportions, position, and clothing silhouette. Flat 2D figures pasted onto a realistic photo, sharp contrast. INS-style doodle, sketch collage, and editorial mixed media. The background stays sharp and detailed. 8K, crisp.