One Piece Chapter 7, page 10: Chapter 7: Friends

Ripper asks, "IS THAT TRUE?" Luffy stands in the doorway and says, "LET ME EXPLAIN. I KNOW ALL ABOUT HIS PAST..." Koby gasps in terror, thinking, "LUFFY!? YOU'RE NOT GOING TO... GASP! IF THEY FIND OUT ABOUT YOUR BACKGROUND, THEY WON'T LET YOU ENLIST... LUFFY, DON'T..." Luffy continues loudly, "SEE, THERE WAS THIS SECRET ISLAND... AND A BIG PIRATE WOMAN......HER NAME WAS ALVIDA..."