is bleach episode 348 filler?

At the Kurosaki Clinic, Karin Kurosaki and Yuzu Kurosaki are seen sitting up watching the late night weather reports on the television while waiting for their brother, Ichigo Kurosaki, to come home from Naruki City. Karin tells her sister to go to bed and that she will stay up as she has things to do.

She advises her to go to bed because she has to get up early and take care of the cooking in the morning whereas she doesn't, advising that she'll yell at Ichigo when he eventually gets home. However, Yuzu insists that she is not sitting up because she is worried about Ichigo.