is one piece episode 536 filler?

Luffy and Shirahoshi are still on their way to the Sea Forest. At the palace, Neptune begs someone to protect her daughter.

Hody just comments on how weak he is and states he only joined his army for military strength and knowledge. He states he will revive the dream and ambition of Arlong.

Nami is shocked by hearing this and during his speech she escapes with Camie. Hody declares he will destroy the army and the Straw Hats and begins to flood the palace.

He attacks the guards and Neptune defends them. Zoro tries attacking, but Hody blocks the attack with one of his own men.