"One Hand Shattered Infinite Swords"

Unfortunately, the human race had the most population so far, and it was almost impossible to have only one leader to lead all humans with complex minds and thoughts. 

Because of this, while the other non-human races started to put up barriers and other precautions for the entire race's survival, the human race was still scattered here and there. 

Some smart and witty country leaders immediately activated the national barrier and announced a first-level hazard to the citizens so that they could prepare themselves well. 

The slower ones at least activated the national barriers of the whole country and each city also erected a barrier. 

They didn't know whether this barrier could minimize the strange effect of a demon lord's body part descending into this world, but they had done their best.