One Piece: Devouring Everything with the Dark-Dark Fruit

The protagonist, Luxi, transmigrates into the world of One Piece and gains the ability to eat an unlimited number of Devil Fruits. What’s more, he gets a Logia-type Dark-Dark Fruit from the start. At this point, it is twelve years before Luffy sets out to sea, and the powers across the ocean have gradually settled into a stable balance. On an island, Luxi rescues Nico Robin, who is being hunted. From then on, sixteen-year-old Nico Robin and Luxi roam the seas together. Luxi: My dream is to collect every Devil Fruit and become the strongest ability user... (A story with multiple heroines, but Robin is his true love...) Luo