is bleach episode 250 filler?

As blue electricity crackles around Kōga, Muramasa smiles and recalls their past. In the past, blades clash as a screaming Shinigami is cut down by an unknown attacker.

As several more yelling Shinigami run toward each other, Ginrei Kuchiki and Kōga stand on top of a nearby pillar of rock. Pulling down the scarf covering his mouth, Ginrei notes they appear to be outnumbered and states the rebel forces are growing daily.

When Ginrei asks him if he has thought of how they should proceed, Kōga says there is no time to come up with a plan and states he is going down there.