Start calling him Luffy? By the time he gives his hat back to Shanks, people will call him Pirate King.
Start calling him Luffy? By the time he gives his hat back to Shanks, people will call him Pirate King.
Start calling him Luffy? By the time he gives his hat back to Shanks, people will call him Pirate King.
It's possible that Shanks is a villain and is using Luffy since he has the will of D to get the One Piece treasure.