is one piece episode 89 filler?

As Luffy races back into Drum Castle to fight Wapol, Chopper tells Kureha that Luffy said he was his friend. Inside the castle, Nami gets a coat and prepares to escape while Kureha is occupied, wanting to get back on the sea and get Vivi back to Arabasta.

She walks out of the room only to catch sight of Wapol, who immediately suspects she is one of the Straw Hats. He chases her along the ledge but gets stuck in a stairway.

He uses Baku Baku Factory: Slim-up Wapol to "eat himself" and become slim. However, the moment he tackles Nami to consume her, he gets a kick to the face from Luffy.