Light fiction referred to light novels that used science fiction or fantasy as the theme and a fictional world as the background. The Kingdom of Light referred to a special genre of Japanese light novels, also known as the " King of Japanese Light Fictions." It was usually based on Japanese anime culture to build a unique, dynamic and creative virtual world, which contained many popular Japanese anime cultural elements such as magic, adventure, love and so on. Both the light novels and the Kingdom of Light were important genre in Japanese light novels. They were both loved and sought after by readers. Among them, the light novels usually had a broader world view and more in-depth sci-fi or fantasy settings with more technological elements, as well as more thrilling plots and character development. On the other hand, the Kingdom of Light placed more emphasis on the creation of characters and storylines, the expression of emotions and humanity, and the integration of Japanese anime culture.