Gol D. Roger was known as the “Pirate King,” the strongest and most infamous being to have sailed the Grand Line. The capture and execution of Roger by the World Government brought a change throughout the world. His last words before his death revealed the existence of the greatest treasure in the world, One Piece. It was this revelation that brought about the Grand Age of Pirates. At the same time, this is also an era of Mafia. Former Roger’s crew member Giotto witnessed the beginning of the era and established his own mafia family with a system. The navy has three generals, and the pirates have four emperors? So it’s okay for my family to have six guardians. World Government have secret unit named CP? We also have an elite independent assassination squad, Varia. The name Vongola Family will spread all over the sea!