is bleach episode 77 filler?

In the damaged dining area of the Bount Mansion, Rukia Kuchiki stands in the middle of the room while Ririn regains consciousness behind her and sees Kurōdo and Noba lying injured and unresponsive on the other side of the room, causing her to run over in concern as Rukia notes that Kurōdo and Noba likely took a lot of damage from being attacked by Maki Ichinose. While Ririn expresses fear of being left all alone if Kurōdo and Noba died before tearfully urging Kurōdo and Noba to wake up and promising to not insult them anymore, Rukia mentally wonders if she can properly perform Kaidō in her current state.