is one piece episode 687 filler?

At the Royal Palace, the Colosseum group has begun to climb the palace. This alarms the executives, as they were confident that the attackers would not make it through the Marines.

As Luffy fights his way through level 1 of the new royal plateau, the Colosseum group catches up to him. Baby 5 notices that the Marines are being held back by a large wall of flame.

Fujitora asks Sabo if there's no way he can convince the Revolutionary to move. As a member of the Revolutionary Army , Sabo explains that he will not let anyone pass who attempts to bring harm to Luffy or his allies.