MTL - Marvel’s Disassembler - Chapter 619 Hunting (below)

It was the year 3090 AD, the virtual reality net game “Swords and Magic” was developed on Earth, and the game would descend upon the world in ten years! In order to survive, the only way was to tame various powerful monsters in the magical world. That’s the only way to make oneself more powerful and take control of the gods’ power! Jiang Bai reincarnated to a time before the game was launched. By relying on his memory, he successfully obtained the Infinite Beast Taming Encyclopedia. Divine Beast Black Dragon Princess! Sacred Beast Dark Night Elf Queen… Jiang Bai asked, “Why is everyone else’s pet beasts animals, but mine is a bunch of gorgeous girls? I’m going to be sucked dry. I need help, quick.”

Chen Sha came to a world of immortal martial arts and was ordered to take charge of the world’s first sect.

Before his death, the previous chief told him:

“If you don’t become the best in the world for one day, you are not allowed to go down the mountain for one day.”

So he closed himself in painstakingly, crossed the heaven gate in his body, and faced off against the ancient and modern powerhouses…

…

Many years later, Chen Sha recalled the day he went down the mountain,

From the moment he descended the mountain, he was number one in the world.

In the next ten epochs, any gods and demons have returned, immortals and Buddhas have lived in the world, ancient powers and ancient gods have appeared one after another.

No matter how the times change, he has always been No. 1 in the world and has never changed.

- Description from novelbuddy

This novel is also known as I Possessed a Demon Sovereign

Chen Luoyang felt that something was wrong with his transmigration. After transmigrating, he possessed the body of the highest expert in the world, the Master of the Demon Cult, addressed respectfully as the Demon Sovereign.

Generally, aren’t supreme experts the ones that leave behind a wisp of their soul behind and occupy a new body of some miserable low-level youngster then they go on a journey of revenge and make a comeback?!

Or perhaps it would be transmigrating into a miserable youngster’s body and obtaining a cheat slowly walking the road to becoming a God?

But why did his transmigration seem wrong?

Now my environment is full of big shots and I feel like I’m going to be exposed!

- Description from Novelupdates

All my life, I never once know what it is to be a family. My parents did not care about me and didn't let me start with my siblings.Even when I diagnose with Terminal Illness by the doctor, they did not care about me.The only thing that accompanies me in this lonely hospital bedroom is the game called Second Life. Sadly, all good things must end, and so is Second Life.I decide to stay inside the game until the end and wait for me to release my final breath.However, I'm reincarnated to another life when I open my eyes. I promise to enjoy my Second Life in this world.Now, if only this woman stopped calling me a villain for a second, that would be great.