is one piece episode 892 filler?

In Wano Country, Zoro's group has assimilated in with the populace. Franky is working as a carpenter named Franosuke, Usopp is selling toad oil as Usohachi, and Robin is training as a geisha named O-Robi to perform before the shogun.

As night falls, Zoro, acting as a ronin named Zoro-juurou, walks out onto the street. Some distance away, a masked man strikes down another man with his blade.

Zoro then comes onto the scene and smells blood on the man, causing him to realize the situation and confront him. He then sees police racing onto the scene to apprehend the slasher, who runs away.