Mimicry

This is a different world created by the mixing of powers in a great war. It has expanded infinitely since the great powers fell one after another. Tens of thousands of races coexist in it. Only the human race was the first to fall due to the great powers of the human race. As a result, the human race has always been suppressed by other races and has been at the lowest level until the appearance of the male protagonist. . . . . .