Want to Join the Straw Hats, but Luffy Has Been at Sea for Three Days

In Windmill Village, Prince Roman, who grew up with Monkey D. Luffy, had a memory that did not belong to him in his mind. From this memory, he learned that Luffy was the absolute protagonist of this world. When he wanted to follow the protagonist's group, he found that Luffy had already gone to sea one step ahead of him. Prince Roman chased after him, and finally founded his own pirate group through the memory of picking up mistakes and foreknowledge.