is one piece episode 897 filler?

As he stands atop the tree over Hitetsu's house, Luffy remembers Ace dying in his arms on Marineford two years ago. As Hitetsu comes out, Luffy asks him where he can find food, water, and a doctor, saying he wants to take Tama there.

Hitetsu says that one could find those things in the nearby town across the wasteland, but warns Luffy that it would be a dangerous journey with the Beasts Pirates roaming around. However, Luffy is undeterred, telling Hitetsu that he is strong.

Hitetsu says his foreign clothes are too conspicuous and puts a kimono, obi, and topknot on him.