One Piece Chapter 2.3, page 14: That Boy "The Straw Hat Wearing Luffy"

With a massive, confident grin, Luffy declares, "I WANT TO BECOME THE PIRATE KING!!!" Coby's eyes widen in absolute shock, and he screams, "EH......! WHA?!! WHAT?!! 'PIRATE KING' WAS THE TITLE OF SOMEONE WHO HAS HAD EVERYTHING IN THIS WORLD!! ARE YOU TELLING ME THAT YOU'RE LOOKING FOR THE 'WORLD'S GREATEST TREASURE'...UHM THE 'ONE PIECE'!?"