Hunting Disasters, but Becoming the Master of Disasters?

[Urban high martial arts + disaster apocalypse + dual systems + devouring evolution + decisive killing + no female protagonist] When Yan Yuran woke up, a disaster was lying on him and biting his abdomen. And the people who tied him up as bait were the two people he had just rescued. They said: "You are just an ordinary person. One death is better than three deaths." Yan Yuran did not refute. He just sent the woman back to the mouth of the disaster, and personally liquidated the man hiding in the car. Then, two systems woke up in his mind at the same time. Kill evil people, settle the cause and effect, and gain karma; hunt for disasters, get to the root of the problem, seize abilities, and achieve breakthroughs. Others hunt disasters in order to preserve the human world. Yan Yuran hunts disasters because they can make him stronger. It wasn't until the nine layers of seals were loosened and the abyss bowed before him that he discovered—— The Lord of Disaster that mankind has been chasing for more than two thousand years seems to be himself.