A satisfying, ultra-close-up 9:16 vertical video in slow motion showing soap grid cutting ASMR. A colorful bar of soap (bright green or rainbow gradient) pre-cut into a detailed grid pattern of tiny cubes on its surface. A sharp utility knife blade is slowly slicing horizontally across the top layer, causing the tiny soap cubes to pop off and crumble satisfyingly one by one. Macro focus on the crisp edges of the soap cubes and the sharp blade. Soft daylight studio lighting, clean background, extremely detailed texture, smooth and hypnotic movement.