, I recommend the following two novels to you: One Piece: The Fruit of the Ape and Naruto as the Lord God. The first novel mainly told the story of the protagonist using the power of the Ape Fruit in the world of pirates. It involved many worlds, such as Naruto and Marvel. The second novel was about the main character becoming a god in the Naruto World, and it also involved other worlds. These two novels are long Doujin novels, so they should meet your needs. I hope you like my recommendation.๐