War of Extinction

Shin Jahyeon, representative of an ordinary world with no innate superpowers, is thrown into a multiversal war where hunters, demon kings, martial artists, mechs and other extraordinary beings fight for the survival of their worlds. Faced with opponents far beyond normal human limits, Jahyeon gains an unusual advantage: the ability to synchronize with the abilities of game characters and turn borrowed power into a weapon for his world's survival.