is one piece episode 918 filler?

As the Wano Country Arc's second act begins, Inuarashi and Ashura Doji quickly engage in a swordfight. The battle leads in a standstill.

Mid-battle, Inuarashi exclaims that he is here to fulfill Oden's dream of taking over the country again. Suddenly, the battle is interrupted by Kin'emon's fire slash.

Ashura Doji immediately walks away from the battle. He explains that he is refusing to join the plan because Kin'emon abandoned the country for twenty years.

Back at Hitetsu's house, Tama's injuries are treated by Chopper and a few Mink doctors.