The coal ash in "Spirited Away"Susuwatari)are a type of small black creatures made up of living dust balls. Their bodies are round and messy, looking like accumulated coal ash. They have large white eyes that contrast sharply with their dark bodies, giving them a simple yet expressive expression, sometimes curious, sometimes fearful. They usually move in groups, gently trembling or jumping, and carrying small pieces of coal, which enhances their image of being tiny and hardworking. Their design is simple and charming, with a soft and simple shape, conveying a sense of gentleness, shyness, and a sense of life hidden in the corners