One Piece Chapter 1, page 52: Romance Dawn

Ten years later...". At the harbor, Makino and Mayor Woop Slap stand together. Makino smiles: "Well, he's finally setting out, eh, Mayor?" Woop Slap grumbles: "I'll miss that rascal. But if he does become a pirate, he'll bring shame to the village." Other villagers wave: "I never thought he'd really do it!" Out on the water, a now 17-year-old Luffy sits in a small rowboat, smiling: "It's a good day to set out to sea!