is one piece episode 602 filler?

Caesar is happy that Smiley ate the candy as instructed. He then calls for Smiley to be reborn as the people in the cell look on nervously.

Bubbles begin to come off of Smiley as it chases the Straw Hats, Kin'emon, and Caesar's subordinates. The subordinates are panicking while Sanji observes that the candy triggered some kind of chemical reaction within the slime.

Kin'emon remarks he does not have a good feeling about the whole thing and Zoro agrees.