is bleach episode 344 filler?

Obuta and his gang show up at Karakura High School looking for Ichigo Kurosaki after he attacked one of the gang for stealing the previous day. Ichigo hides from them until he notices Uryū Ishida approaching the gang to admonish them for their rowdy behavior in the schoolyard.

One of the gang mistakes Uryū for Ichigo, which enrages Uryū to the point that he breaks the man's nose and knocks him back into the pole. This action greatly angers Obuta, but Uryū calmly replaces his glasses while dismissing the notion that anything about him should remind them of Ichigo.