is one piece episode 427 filler?

===East Blue Team Memories=== Nami rides the Shiro Mokuba I to a cave where members of the Orenami Fanclub introduce themselves. As they show Nami the inside of the island, they flirt with her.

The rest of the crew are looking at the different places of the town that resemble their home towns. Luffy rides on a windmill as the old man tells him that he should be familiar with them because he's from Foosha Village.

Luffy replies that he is but they do not have one that big. Zoro went to the training hall identical to the one from Shimotsuki Village.