@Aviloex The land they come from is based on Japanese and Chinese culture, called Hoshido(more so on Japanese culture). I know there's Yi Ti, but I don't know much about it, and it's not shown in the shows, from what I've seen, and is only mentioned a few times. Let's say what happened to them is what happened to Samurai Jack when he first faced Aku, but in reverse. I'm taking aspects from different media and ideas, such as Ghost of Tsushima/Yotei, Shogun, the movie The Great Wall, Fire Emblem, etc.