Under the Oak Tree (Web Novel KR) - Chapter 167

Crown Reylin loved three things; flames, fireworks, and bombs. He didn't spare any of these against those who insulted him due to his family. No, Crown Reylin wasn't born in a poor family. He was born into an outstanding family with every descendant prevailing in their industry! But as the first immersive game appeared on the market, Crown Reylin stepped in... to enjoy more of his hobby!

Flames, fireworks, and bombs! Empresses, the kings and their princesses, and many more people will feel them!

It was Reylin's time!

Riding out the apocalypse on a tropical island isn't exactly a vacation. When mana arrives on Earth, Coop finds himself isolated in paradise with only one real option to survive. He needs to claim a civilization shard and level up. Coop maximizes his chances by carefully selecting a class and committing to progression. He’ll need to grind thousands of monsters to compete on the system's leaderboards while upgrading his settlement to represent the factionless.

Upon awakening, Su Changkong found himself transmigrated to a world thrown into chaos by war and rampaged by demon monsters, where his martial arts talent was mediocre. However, Su Changkong discovered that as long as his own “life span” increased, his talents and potential could also be “limitlessly” enhanced!Cultivating the Health-preserving Fist technique and practicing the qi of longevity! The path to immortality is littered with corpses, and Su Changkong embarked on a Martial Arts path where he would not perish, even if heaven and earth were to be annihilated!

I finally managed to kill the demon lord.