What is NPR?
NPR (aka toon shading) stands for Non-Photorealistic-Rendering.
NPR is the style of rendering that looks like anime, such as in Genshin.
Eevee and Cycles uses PBR (Physically Based Rendering), but with some tricks, you can use them for NPR.
Goo Engine developers are adding a proper NPR system to upstream Blender (the news) and it is a big deal.