is one piece episode 587 filler?

Tashigi was sliced in half in the last episode. Feeling dishonored by still being alive, she tells Law to kill her.

He says that she doesn't have the right to tell him when or how she can die and she tries to attack him with her broken sword. She misses and Law prepares to slice her into more pieces.

Luckily, Smoker steps in and takes on a fight with Law. Back at Luffy's group, the beaten centaurs talk about how they underestimated the Straw Hats and how they took Brownbeard with them.