is bleach episode 285 filler?

After a grievously injured Tier Harribel falls into the town below, Mashiro Kuna notes that the last Espada has been taken out. Wonderweiss Margela suddenly gets back up and goes to attack Mashiro, but she easily defends herself by kicking Wonderweiss' face, sending him flying across the town.

Kensei Muguruma warns Mashiro to take her mask off soon before she reaches her limit, but Mashiro reminds him that she can keep her mask on for 15 hours. Wonderweiss charges towards Mashiro again, but Mashiro grabs his face and pummels Wonderweiss into the ground.

However, Wonderweiss gets back up, grabs Mashiro's scarf, and throws her across the town, tearing the scarf in the process.