is one piece episode 816 filler?

After having defeated Charlotte Brûlée, Chopper and Carrot search for a mirror leading to Sanji. They ride on Diesel's back, carrying Brûlée's unconscious body.

Carrot attempts to wake Brûlée up, but fails to do so. Meanwhile, Luffy and Nami are still trapped inside Mont-d'Or's book.

They are watched by Opera, who mock them and tell them they cannot escape. As Luffy's hands are nailed to the prison wall, he gets the idea to tear his arms off in order to escape.

His arms start to tear but he struggles to rip free. He keeps trying.