MTL - Marvel: I Get the Power of the Spell To Play Superman - Chapter 124

Shao Xuan joins a friend in his expedition to a recently discovered archaeological cave. After he picks up an ordinary looking stone he is teleported to a different world and wakes up in the body of a small orphan child. The world he is in now is still in its stone age with primitive tools made of stone and the ways of the people are savage. Savage isn’t the only thing special about the people though, because they have superhuman strength, jump higher than trees and punch stones. In short, they are able to cultivate their bodies. Despite all this, it is a real struggle to survive because of the scarcity of food. Together with Caesar, his pet wolf, he tries to survive in this cruel world.

A recurring nightmare afflicted Khan's nights since the Second Impact. His dreams replayed the scenes of the crash of the Nak's spaceship, an alien race that the humans had defeated five hundred years ago.

Yan Wushi had walked a path full of blood and corpses.

He did not believe in the good nature of humanity. Even more so, he did not believe that there could be someone with great kindness and sense of justice, who would be so considerate of others without asking anything in return.

One day, Shen Qiao, who was the sect leader of Mount Xuandu, the number one Daoist sect under the heavens, was challenged to a duel but somehow fell off the cliff.

Yan Wushi happened to pass by down there.

Seeing Shen Qiao who was seriously injured to the point of dying, he suddenly came up with a perfect idea…

After thousands of autumns, who could stay eternal?

- Description from Novelupdates

Our protagonist Caam is a man from Earth that was reincarnated into this world as a demon. In order to survive, he spared no effort in avoiding the sparks of battle and without noticing it, he became strong himself.