is one piece episode 243 filler?

At the Galley-La Company, more shipwrights are being massacred by the bear-masked CP9 agent. The area soon becomes eerily quiet as another group are shipwrights noticed the bear-masked agent has killed off more shipwrights.

Tilestone runs to the scene and notices that the bear-masked agent has not only killed off more shipwrights but has seemingly killed Lucci and Kaku as well. Tilestone is visibly shocked and angry at the sight he has just seen and the bear-masked agent says he's getting tired of dealing with all of the shipwrights.