I hate being in pain, so I think I'll make a full defense build - Chapter 177

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.

Power and desire, money and strength, conscience and responsibility, the road ahead is at a loss, as a time traveler, Simon, where will he go, this is a leading mainstream novel with a relaxed daily life and a slow pace

- Description from novelbuddy

In the year 1257 of the Federation Calendar, Chen Pingchuan, who has crossed into a different world for three years, gets the Apocalyptic Wasteland Simulator.Through information obtained from the simulator, a sudden disaster will strike Spring City in a year. Accompanied by highly radioactive red rain, a type of mutated creature called Black Demon will be born.With the simulator, Chen is in a better position to survive, but he also wants to find out the secrets of the girl he meets in simulations.Simulator: [She left you a small bottle of liquid with an unknown effect and a note with just two short lines written on it.][Avoid the red rain!][Forget me!]

In her previous lifetime, they had married for five years. He meant everything to her, but she was thrown away like an old shoe.