is bleach episode 6 filler?

At nighttime in Karakura Town, Rukia Kuchiki sits on the edge of a building's roof and looks at her Kikanshinki, which beeps as one of its four lights blinks on and off. Noting with mild concern that it is almost empty, Rukia observes her left hand not moving properly when she tries to flex its fingers and concludes that it is time to replenish her supplies.

The next morning, at the Kurosaki Clinic, Ichigo Kurosaki brings a plate with two onigiri and some accompaniments on it to his closet and knocks on the door while telling Rukia that it is time for breakfast.