One Piece Manga Chapter 449

A young Luffy falls into a “Mysterious Park” and meets his future crewmates as children. After they rescue Robin from a young Alvida, Luffy asks them to join his crew in the future. Though they all decline and will likely forget the encounter, Luffy promises they will meet again.

During a final duel, Luffy defeats Usopp with a single punch. A saddened Luffy gives the Going Merry to Usopp and walks away. The rest of the crew, heartbroken, leave the ship and their friend behind.