is one piece episode 862 filler?

In the Mirro-World, Katakuri wonders why Luffy chose to face death by returning to confront him again, asking if he intended to subordinate himself to the Big Mom Pirates. Luffy attempts to strike Katakuri as he states that he came to beat the Sweet Commander, and Katakuri says that that is not an option as he dodges all the attacks and prepares to respond with his own attack.

Katakuri overpowers Luffy in their clash, and creates mochi arms with Muso Donuts again.