is one piece episode 781 filler?

As Luffy and Carrot are surrounded by Marines inside the cafeteria, Carrot wonders what they should do. However, Luffy decides to keep eating rather than pay any mind to the Marines, grabbing an entire bowl of curry and planning to leave.

Grount mocks Luffy, calling him a nothing before confronting him. He pulls out two daggers and attacks Luffy, but Luffy counters him with the curry ladle.

The two duel, and Luffy eventually manages to slam the bottom of the ladle into Grount's face, covering it in curry.