is one piece episode 315 filler?

Garp reveals that he won't capture his own grandson. He more or less came to make sure he was okay and to let Koby and Helmeppo see him.

While the Marines repair the damage to Iceburg's building, he lets the three take some time to catch up and chat, though he does slug Luffy once more when Luffy doesn't show some reluctance. Nami, Chopper, and Sanji come to realize just where Luffy gets his stubborn and stupid streaks.

After Garp leaves, the rest of the Straw Hats discuss Garp's revelations.