One Piece Chapter 7, page 19: Chapter 7: Friends

Luffy waves back happily, shouting "HOORAY!!" as their boat sails away. Zoro watches with a smile. Ripper lowers his salute and says to Koby, "YOU'VE GOT SOME GOOD FRIENDS, SAILOR." Koby replies, "YES, SIR." Ripper then turns to his men and says, "NOW, IT'S AGAINST REGULATIONS TO SALUTE PIRATES LIKE WE JUST DID. AS PUNISHMENT, WE WON'T GET ANY DINNER FOR ONE WEEK!" The Marines salute with a "FWIP!" and shout, "YES, SIR!" Luffy and Zoro sail off into the open sea. The narrator box reads: "LUFFY AND HIS FIRST CREWMAN (THE FORMER, INFAMOUS, DEMONIC PIRATE HUNTER ZOLO) SET SAIL... TO THE GRAND LINE!!!...NEITHER OF THEM REALIZING THAT THEY'VE MADE ONE SERIOUS MISTAKE..."