is bleach episode 49 filler?

In the past, a younger Rukia Kuchiki enters a waiting room through a pair of sliding doors in the Thirteenth Division as a Shinigami behind her instructs her to wait until their captain arrives shortly. When Rukia requests that the Shinigami address her less formally in the future because she is just an ordinary new division member, the Shinigami claims that he will be more careful in the future and closes the doors, leaving Rukia to look down and sigh with melancholy.