Revealed Secret - The Truth of Ancient Weapons

As the whole island celebrates the capture and defeat of Hody and his comrades by the Strawhat Crew of whom make their own plans to leave Fishman Island soon while Jinbe reluctantly tells Luffy that he cannot join his crew at the moment but he will in the future when he is finished his won tasks and obligations, They are all soon called to celebrate their victory at the Palace with merriment, music, drink and food.
As the party begins to wind down Robin asks and discusses a troubling and possibly dangerous secret with King Neptune surrounding his daughter, Shirahoshi, the ship Noah and the mysterious Joy Boy.