One Piece: The Soul Purchasing Pirate - Chapter 18

Being young is a treasure, but education is indispensable.For Han Yu, who started working at sixteen, being too young wasn't a good thing.Due to his young age, he was almost turned away by the leaders when assigned to a bureau.Witness the story of the youngest police officer in the history of the Linghai Public Security Bureau turning his life around.

Chen Lin traveled through the martial arts world and found that he actually had a clone, but…

“Why is my clone in the world of immortality?”

“Forget it, you can continue to practice martial arts. I am going to start cultivating immortality. I will meet you all again in a thousand years!”

…

Over the course of thousands of years, there will always be geniuses born from the sky, whose fame is as mighty as the sun, sweeping across the universe.

But no matter how heroic the Martial Emperor is, when they burn out the emperor’s blood and exhaust their souls, they finally break through the world of mortals with their withered and broken bodies, penetrate the layers of divine patterns and talisman formations, and see the figure standing at the end. …

The person who stands on the twelve-level lotus platform, wears the Mountains and Rivers Sheji Diagram, holds the Jade Order of Creation in his left hand, hangs the Four Swords of Killing Immortals in his right hand, and hangs the shadow of the Tai Chi Diagram behind him, will always turn around.

He smiled cheerfully and said to them:

“Coming?”

[Liu Jieliu] [Fu Dao] [Orion] [Martial Arts] [Clone]

- Description from novelbuddy

Wang Yi gets a key, opening a door in 2022 will lead to 1982, and opening a door in 1982 will return to 2022.

Two very different great eras appeared before him:

Abundant dietary protection, developed industrial products, miraculous medicines, and explosive information, this is 2022.

Simple folk customs, rich wild resources, scattered antiques, and treasures of the age, this is 1982.

Traveling between these two eras, Wang Yi didn’t think much of it, he just wanted to live a good life.

- Description from novelbuddy

A modern-day antihero, who was infamous for his devious acts, dies in an explosion meant to take down a powerful criminal syndicate. Waking up in a world of sword and sorcery, he finds himself possessing a fragile, powerless body with a strange “System” that seems broken. Initially thinking he's doomed, he learns that by pretending to be weak, he can manipulate others into revealing their secrets, granting him abilities they possess. As he rises in power, he discovers that the System was intentionally sabotaged—by none other than his own future self.