I Became the Best Forensic Doctor After My Betrayal - Chapter 315 - Revenge

On this land of real souls, with millions of different martial art institutions, there’re so many strong fighters just like the trees in the forests.

Ron finds himself reborn in the world of One Piece, stranded on a remote island in the East Blue. But he's not just any ordinary child—he’s bonded to a mysterious sign-in system that grants him powers with every new location he visits.At his first sign-in, he unlocks the legendary Sun Breathing Technique, along with a boost to his vitality. From Shitmotsuki Village to Skypiea, Enies Lobby to Marineford, Ron travels the world, collecting extraordinary rewards that make him a force to be reckoned with. The Raikiri, one of the 21 Great Grade Swords, Armament Haki, Observation Haki, and more fall into his hands.As Ron steps onto the battlefield of Marineford during the legendary Summit War, the mightiest warriors—Four Emperors and Marine Admirals alike—pause, stunned by his presence. But Ron merely waves them off, “Don’t mind me. I’m just passing through.”Join Ron on his journey across the Grand Line as he signs in at iconic locations, growing stronger with every step. This is not just an adventure—it’s a legend in the making.

Neuer travels through the world of pirates, is adopted by Bermer, and becomes Nami’s older brother!

The Awakened Talent Copy System can copy anyone’s talent in a certain aspect at will!

What kind of experience will it be when Neuer has Shanks’ domineering talent, Kaido’s physical talent and Hawkeye’s swordsmanship talent?

Even the ability of a devil fruit can be copied by the system as a talent!

Many years later, Neuer turned the sea upside down with a talent that surpassed everyone in the world.

(Slow and hot text, slow development in the early stage, and random waves afterwards)

- Description from novelbuddy

Reborn and returning, he possesses medical skills, can practice immortality, has a slave who is the king of killers, and a maid who is the school beauty pursued by everyone. Even casually taking out a piece of trash can shock the world. His return has set this world ablaze.