is bleach episode 283 filler?

Starrk, after stepping on top of a building, is stabbed from behind by a sword that comes out of his own shadow. As Starrk wonders what happened, Shunsui suddenly reveals himself from the shadows, and Lilynette Gingerbuck asks Starrk if he's all right.

Starrk states that he is, but Lilynette tells him he isn't since he got wounded, and that he shouldn't try to act so tough. She tells him that they should get serious now, but Starrk reminds her that they can't overdo it.

Starrk then asks Shunsui what technique he used, remarking that hiding in the shadows is a ridiculous thing to do, and that he had no idea he was hiding something like this from him.