The strongest family of pirates

Introduction: How will the world of tutors merge into the world of One Piece? Gangsters turned into pirates? Not only Gol D. Roger became the Pirate King, but also the Vongola family led by Sawada Ieyasu? In the end, when the protagonist leads his family and the Straw Hats to fight for the Pirate King, what kind of war will break out...