Doomsday: Am I Not the Strongest?

Apocalyptic martial arts + Superpower + Monster + Aura recovery + Pretending to be a pig and eating a tiger + No system + Not brainless Three hundred years ago, a strange fog spread from the sea to the land, and many humans were infected and turned into monsters. Since then, humans have lived in fear of being dominated by monsters. Fortunately, scientists extracted genetic medicine from monsters and created super humans - superpowers. People divide superpowers into C-level, B-level, A-level and the strongest S-level. But there is another unknown level above S level called - entropy.