I Reincarnated in One Piece and Became The Strongest Logia Type

Others transmigrate into the world of One Piece blessed with a Prophet System—a cheat that guides every step. But Gern Reginald Sigmar arrives in a far crueler era: the Dark Ages of Rocks. The script? Long since shattered. A system? It never existed. The only path left to him is brutally simple—join the Navy and survive. After four grueling years of relentless struggle, he finally becomes a mere private, then even takes out a loan, risking everything to pull strings and force his way onto the battlefield of God Valley. Yet before they can even reach the central zone, he is crushed by overwhelming Haki again and again—his consciousness shattered no fewer than fifty times. When he opens his eyes for the final time, a mysterious fruit of unknown origin lies in his arms. Without hesitation, Gern makes his choice and bites into it. In that instant, space shatters. The atmosphere howls. His body transforms into the very source of devastation itself, and with a single motion, the air trembles as if the world were about to collapse. A Logia-type Devil Fruit—the Heaven-War Fruit! Gern stares in disbelief. “Huh? Aren’t these familiar effects supposed to belong to a Paramecia? How the hell is this classified as a Logia?!” From that moment on, Marine Headquarters gains something unprecedented—a humanoid natural disaster. And so, Gern declares his justice: “Get out of the way. I’m about to begin the execution of ‘Shaking’ justice!” In time, this becomes the creed of the man who will stand at the very peak as a Marshal: “If justice must rely on natural disasters to be reshaped… then let it begin today.” My justice is natural disaster.