Demons Run Amok, and I Punch My Way to Godhood

(Leveling Up, Invincible Protagonist, Power Fantasy) Transmigrated into a chaotic world overrun by demons, where martial arts reach the divine and magic is wondrous. Lu Fan has no flashy techniques. He has only one punch. Killing monsters increases his cultivation. From blowing demons apart with one punch, to shattering cities with one punch, to smashing stars with one punch... When a world-ending demon saint arrives at the gates with an army of billions, it sneers, “Mortal, is this one punch all you've got?” Lu Fan nods and throws a punch...