is one piece episode 389 filler?

With Duval's face revealed, the Straw Hats are in awe as it looks like Sanji's wanted poster. Duval blames Sanji for everything that happened to him years ago.

He also tells of how bounty hunters came after him at the behest of the Marines. As Sanji makes it where Luffy is, the Flying Fish leader tells his enemy that he had to hide all his life.

As he demands his life back, Sanji kicks Duval squarely in the face. Then, Duval and Sanji argue about the face on the wanted poster.

The rest of the Straw Hats believe Sanji is lucky while Franky is thinking of making friends with Duval.