is one piece episode 516 filler?

This episode starts on the Kuja Pirates' ship. Jinbe is leaving and he and Luffy are saying their farewells.

Shortly after Jinbe leaves, Hancock fantasizes about Luffy again. The scene switches to a deserted island north west of the Amazon Lily called Rusukaina, which will be Luffy's training spot for the next two years.

Rayleigh mentions it is a great spot for training because the island has forty-eight seasons in a year and the season changes weekly. Hancock tells Luffy that she will bring him food everyday from Amazon Lily.