One Piece: I Devour the World with Gluttony

Lin Hao transmigrates to the world of Pirate King and obtains the Gluttonous Devil Fruit, a Zoan-type, special-species, mythical beast fruit. It has just one ability: devour. Devour a Devil Fruit and permanently gain its ability. Devour an ability user and make their Devil Fruit powers your own. You can store up to three abilities. The price: one year of your lifespan and one more obsession. The System rewards him with three God-Tier fruits: Sky Vault, Earth Vein, and Return to the Void. They are all sealed, and their details are all question marks. Only by continuing to devour can he gradually unlock them. The more he eats, the longer he lives, but the less human he becomes. In the end, will he eat his way into becoming an immortal, undying monster, or stop devouring and die as an ordinary mortal?

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.