Immortals of the Hidden Sect

A young man died after being overworked to death and find himself reincarnated as the son of Immortal Emperor in the Immortal World. However, the Immortal World is not like what he thought. It was a cruel place where strength decides everything. After years of continuous struggle in the bloody wars, he finally got sick of fighting and ran away from the Immortal World. "Since I can't become the ultimate boss in the Immortal World, I will just run away and become the super hidden last boss in the mortal world while building my power" Note : I found the cover on google. All credits for the cover goes to the original artist. If you're the artist and want me to put it down please tell me.