, I recommend the following One Piece novels to you. They are all about crossing the world of One Piece and joining the navy: 1. The main character of " New Star of the Navy " joined the navy after traveling through the world of One Piece, ending the era of chaos for the sake of order. 2. " My One Piece Is Too Stable ". After the protagonist traveled through the world of One Piece, he was repeatedly hunted down by powerful enemies, but he was constantly promoted and made a fortune. 3. In " Vice Admiral in Faerun ", the protagonist was punching in and out of work in the navy. He was dressed in Faerun Continent and fought against various legendary creatures. 4. In " Man in the Navy: Invincible with a Single Blade," the protagonist had the powerful ability to kill. He worked in the navy to steal his salary, but he was involved in a conspiracy. I hope you like my recommendation.😗