World Development System - Chapter 318: 249. It is ok, he is only rude on the outside.

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.

Junpei Takeda, a high school student, is childhood friends with Noriko Tatsumiya and is bullied by Kido Shouta. One day, while bullying Junpei, they (Junpei, Tatsumiya, & Shouta) were suddenly summoned to a different world by the whim of “God”. Summoned Heroes with cheats, or so he thought. But it turns out Junpei’s stats were even worse than an average farmer. Tricked into a deathly labyrinth by the only one he trust, he walks the journey for revenge.

Boxing is power!Making a fist means holding power!A powerful punch is power!Nott Rod, who traveled through the Great Pirate Era, deeply agrees with this.Facing the endless monsters on this sea, only his fists can bring him a sense of security.Fortunately, he has two golden fingers after traveling through time:1. [Knights do not die with bare hands]2. [What doesn’t kill me will make me stronger]With two golden fingers in hand, he decided to achieve the greatest power with the biggest fist!Fists rule the world!Power rules the world!

Syd Castell found himself transported to the Marvel universe, turning into a mutant held in a research facility. He was somewhat panicked...Luckily, at a critical moment, he awakened his mutant ability: 'Imitation,' allowing him to mimic the abilities of others!Imitation Targets:- Orochi (Titles: Sun God, Earth's Will)- Wanda (Titles: Scarlet Witch, Owner of Chaos Magic)...Imitation Target → Sun God……Professor X: “We must find him quickly and guide him in controlling his powers to prevent an irreversible catastrophe!”Magneto: “Are you my child???”Thor: “Brother?”Loki: “?”[This is face-slapping kind of fanfic, where the mc goes around gets stronger and slap the sh*t out of his enemies, and so on][Raw: 美漫从五级变种人开始]