One Piece is currently in the Egghead Island arc, and much to the surprise of every fan, Oda has revealed quite a lot of exciting bits of lore in this particular story arc. Much of that is down to the fact that Vegapunk, the smartest man in the entire world, has decided to go against the Government and reveal a string of secrets about the Void Century. Of course, when speaking of the Void Century, the matter of the people of the D was always going to come up and when it did, fans finally found out quite a lot about Joy Boy, the Ancient Kingdom, and how all of that connects to the people of the D.