is one piece episode 725 filler?

Doflamingo's string bullets fly toward Robin and Law, shocking everyone on the Flower Field. Suddenly, Cavendish arrives and deflects all the bullets.

Noticing aloud that Doflamingo had still not been defeated, Cavendish speaks to Luffy, who tells the pirate to bring Law, Robin, and the others off the Flower Field. Cavendish argues, saying he wanted to land a hit on Doflamingo, but Luffy replies that he trusted Cavendish with his allies, causing Cavendish to reason that Luffy is a fan of his, so he complies.