King's Awakening - Chapter 501 - : White Mitchell’s Transcendent Journey!

A supreme expert in the Immortal World had died, and a strand of his soul returned to its original body on Earth. Tang Xiu discovered with amazement that ten thousand years passed in the Immortal World, yet only a single year passed on Earth.

Ruthlessly betrayed by his lover and trusted friends, Tang Xiu found that his soul went back to his previous body on Earth, and, despite he spent 10,000 years in the Immortal World, just a year has passed on Earth and many things have changed. Having an unsurpassed knowledge, Tang Xiu will protect his loved ones and go back to the Immortal World to take his revenge.

- Description from Novelupdates

[SYSTEM NOTIFICATION]~Paradise Will Now Be Initialized~{The realm of the gods, Paradise, will be revealed to the chosen humans. Overcome the 99 Floors and reach the Final Realm.}For ten years, Mikey has been haunted by nightmares, until one day he stops having them... and they start appearing in real life.Demonic Monsters, Status Windows, and Skills... all of them are now in reality.What's worse? Anytime he dies, he is transported to the past and forced to repeat every scenario in this new world until he conquers and survives everything.What exactly is this new world, and how will the Dreamer survive?

Humanity has been gradually transported to the Abyss by a bored god to compete against other races and monsters.The problem is… humanity failed. In a last desperate push the strongest survivors chose a comrade to travel as far as possible back in time.

“Primum non nocere.”