MTL - My Parents Are Omnipotent - Chapter 3 that's a good guess

A boy wakes up with omnitrix as a X-GENE

Extras die every day in various ways in the game [Demon King’s Palace 3].

He was an extra when he reincarnated into the game.

I’ll never die. Never.

“Let’s get started.”

Evan had come to a conclusion. He tapped his cheeks as a way of signaling to himself that he had made up his mind.

He would become a character who never dies.

Su Mu took the player panel.

Came to the game world 10,000 years in advance.

The most common talent for players has been drawn:

…immortality.

However…

Although longevity, level experience is locked, what should I do if I can’t upgrade and become stronger?

Only practice, practice, practice!

There is no time in the cave, and a thousand years have passed.

On his way out, he found…

The girl I rescued casually back then actually created a tribe for me? !

Become a tribal totem yourself? !

…

Five thousand years later, the first batch of beta players arrived.

They looked at the totem statue standing in the first tribe, and looked at each other…

“This is the system introduction, a very easy to kill level 1 boss?!”

- Description from novelbuddy

Joseph Knox, one of the most prolific and well-known serial killers on the planet.A person considered so demented and manic that even trying to reason with him was believed to be a waste of time. A man so far gone that he seemingly didn't deserve any pity even on his deathbed.So why? Why would a man like him receive a second chance? And why did the world around him seem so familiar?Disclaimer: AU when it comes to some parts of Madara's plan(I'll try to make it make sense at least), and aliens don't exist in this world