One Piece: Seizing the Nika Fruit at the Start

[Infinite Combat, Overlord of the Seas, Goal: The Strongest] If Blackbeard had seized Luffy's Nika Fruit, Ace had been rescued, and Whitebeard had not died in the Marineford War, where would the world's future lead? On the eve of the summit, a transmigrated unfortunate soul is devoured and fused by Douglas Barrett. The life of the Demon Heir from then on takes a different path. "Paramecia-type Merge-Merge Fruit: capable of arranging and combining all objects to merge them. It can also fuse touched inorganic matter with one's own body, forming ideal transformations!" Cell arrangement and combination can create the ultimate lifeform, ever-changing! Matter arrangement and combination makes this world a sandbox game in your hands-you are the creator! Microscopic particle arrangement and combination: hand-crafted nuclear fusion, destroying heaven and earth! Impel Down is thrown into chaos, the mad dragon emerges from the abyss, turning the entire deep-sea prison into a ship to join the summit! The Marineford War deploys a Gundam, one shot sinks Marineford! New World hegemony, sweeping the world, making the name of the Demon God resound across the sea!