is one piece episode 120 filler?

The Tsumegeri Guards charge into the palace to attempt to save Cobra. Cobra orders them not to attack as they will just be throwing away their lives.

The Guards tell their King that they have sworn to protect him even to the death. Acknowledging their reputation, Crocodile offers to spare their lives if they leave and go home, to which they refuse.

However, before they can attack, their bodies show signs changes and bruising.