One Piece: Hundredfold System, My Diamond Kidneys Are Unbreakable!

A gamer's wildest dream turns into his worst nightmare—reborn as a Celestial Dragon's slave in the world of One Piece. But fate has other plans. Armed with the Hundredfold Enhancement System, every action multiplies his growth by a hundred. A thousand sword swings? Orange-tier Swordsmanship unlocked. A thousand Haki sessions? Armament Haki maxed out instantly. Even Boa Hancock can't believe his monstrous training speed. When the Summit War erupts, he vows to save Ace single-handedly. The Celestial Dragons branded him property—now he'll brand them as history. In a world of pirates and tyrants,…