MTL - One Piece Talent System - v2 Chapter 408 1 punch

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

“Look, boss, that red dragon lacks dragon's might, and it doesn't even know how to breathe fire. Let's take it down and make a fortune,” said one of the adventurers.At that moment, the lethargic red dragon opened its eyes, looked at the adventurers appearing before it, drew a forty-meter sword, and deployed techniques such as Sword Mastery, Samadhi True Fire, Eighty Nine Mystical Powers, and Law Heaven and Earth...The world became quiet again, and the red dragon rolled over and continued its nap.This is the story of a red dragon who, after years as an overworked employee, finds himself reincarnated in another world.Devoid of the intrinsic knowledge and natural abilities of dragons, it wields other formidable skills.

Some crowns are forged in blood. Others are drowned beneath it.In a city strangled by smoke and silence, where children are shackled to machines and shadows rule behind gilded masks, Keiran is just another forgotten soul—until the mark appears.Buried beneath the factory’s foundations lies a world long erased from history. Ancient oaths whisper through stone and water, and something older than memory begins to stir. As Keiran is drawn deeper into the abyss, he uncovers a legacy not meant for mortal hands—a crown shattered in defiance, a flood sealed by sacrifice, and a power that demands a price.Hunted by tyrants, haunted by echoes, and bound to secrets he never asked for, Keiran must choose: drown in the tide of what came before, or rise against the current and reclaim what the world was forced to forget.But the deeper he goes, the more the truth unravels…And beneath it all, something still breathes.