is bleach episode 304 filler?

Ichigo, after being "revived" by both of his sisters, walks outside and wonders where he is. He then realizes that he must be dreaming and "Rukiruki" suddenly appears in front of him.

Ichigo greets her and begins to explain about his other dream, but then stops, since this is just a dream and doesn't matter. Rukiruki suddenly hits Ichigo and tells him that he's not dreaming and that she came to get him because they're about to have a meeting.

Ichigo claims that he doesn't know about a meeting and she hits Ichigo some more. She then forces him to the castle and she states that her name isn't Rukiruki, but just Rukia.