It's an alternate world, and humans are one of them. There are also orcs, demons, and other mysterious races. They often have to fight for a long time for the space to survive, fighting each other. This is the era of the jungle, where the strong are kings, and they have a lot of wealth and slaves at their disposal. The weak, on the other hand, have no freedom or right to live, and they and their children and grandchildren have been enslaved for generations...... to the extinction of the race...... Here, there are often tragic wars, full of blood and death, and life here is as cheap as ants. In this world, most of the same people are united, but sometimes for their own interests, they will kill each other, and there is no compatriotism at all!