is one piece episode 656 filler?

Doflamingo demands to know what Law plans to do with Giolla, since his Family will do anything to help their captain. Law simply switches her with a rock and allows her to flee, which she doesn't wait to do.

Doflamingo states Law's grudge is just his pettiness of his past loss, but Law disagrees, claiming he plans to fulfill the dedication of a person he knew. Thus the two begin to clash on the bridge, with Law using his powers to create an explosion.

Out at sea, Nami's group are trying to get back to Dressrosa while being on the lookout for Dolflamingo.