Chapter 603

Chapter 603 is titled "Keep It In Your Heart".

Cover
"Sanji and some cute squirrels making pies together", requested by NSC Hayao-Scan.

Short Summary
The Straw Hat Pirates are finally on their way to Fishman Island! After Nami explains the properties of a coated ship, Franky reveals why Hatchan was not there to guide them. As it turns out, the Marines discovered the Thousand Sunny and tried to claim it, with Duval and Hatchi sustaining heavy injuries in the ensuing battles. Franky also reveals that before Bartholomew Kuma was fully converted into PX-0, he made a deal with Dr. Vegapunk to secretly program him to protect the ship until the return of one of the Straw Hats. As such, the Straw Hats are deeply indebted to Kuma for not only saving their lives but for protecting their ship as well. The chapter ends with the Caribou Pirates in pursuit of the unaware Straw Hats.

Long Summary
The chapter starts out in the "no man's land" on Sabaody Archipelago. Caribou, Coribou, and their crew somehow escaped the battle and are holding the Imposter Straw Hats (sans Black, Cocoa, and fake Chopper) captive. The fakes beg for their lives as Coribou and the Caribou pirates dig up holes, preparing to bury the imposters alive. Caribou reveals that he never intended on following the Straw Hats and planned to kill them from the inside and is very angry that he met fakes instead. The imposters continues to beg for mercy and Caribou then grabs fake Sanji and starts to suffocate him with his Devil Fruit powers. Fake Sogeking tries to stop Caribou with a bazooka but fails. The imposters are terrified, learning that Caribou is a logia. Caribou then orders his crew to bury the fakes and happily states that he managed to confirm the real Straw Hat Luffy.

Chapter Notes

 * A younger Roger is seen for the first time and bore an uncanny, near-identical resemblence to Luffy.
 * It is revealed that Roger was a previous owner of Luffy's straw hat. If he was the original is still to be stated.
 * Roger may have given the hat to Shanks who gave it to Luffy. Since in all of his previous appearances he was seen without the hat, he may have given it to someone else before Shanks or given it to Shanks long before his time as Pirate King/previous appearances.
 * Rayleigh sheds tears for the third time.
 * Caribou is revealed to have an unknown Logia ability.
 * It is revealed that Bartholomew Kuma made a deal with Dr. Vegapunk, in which he was secretly programed to protect the Thousand Sunny until the return of one of the Straw Hats.
 * The faces of Fake Sogeking and Fake Franky (who was wearing shades) are fully shown.
 * Apparently all the pirates recruited into the Impostor Straw Hats (except for Caribou, Coribou and their crew) were captured by the Marines.
 * For the first time, Chopper and Usopp are seen beating up Luffy and Zoro much like what Nami used to do.
 * The Caribou Pirates reveal that they were planning on killing the Strawhat Pirates from the start and that this was the only reason they considered joining the crew.
 * Ship coating is further explained.