If you're looking for software to render a light novel, you could consider Daz Studio. It has a lot of pre - made assets that can be used to quickly build scenes. Also, Cinema 4D is known for its user - friendly interface and great rendering capabilities. You can choose the one that suits your skill level and the specific requirements of your light novel rendering project.
Some popular software for rendering include Blender. It's free and has a wide range of functions that can be useful for creating scenes from a light novel. Another one is Maya, which is more professional and widely used in the industry.