The pieces of flesh and debris blew up in the air as Yelwis bombed the whole village after confirming that there was no survivor. Though he struggled a bit with this action as someone was following him, trying to infect or kill him.
Unless an opponent of a grade higher than him acted directly, there was no one in the world capable of stopping Yelwis.
So his escape was pretty easy as Yelwis ignored the pursuit of his follower and then with the piece of the plague, he flew away from this place.
His speed was so fast that his pursuer could have never caught up to him and this was why Wilkis chose Yelwis to begin with.
In the world, there are only a few people that are faster than Yelwis and most of them exist in grade four and above. But there is no way the existence of that level would be born out of the plague so early.
Or so Alfin summarized.
But there was a problem with the pursuer of Yelwis. The genetics on which the nanites preyed to birth this being, was a tad bit special.