is bleach episode 313 filler?

Ichigo Kurosaki and Lieutenant Renji Abarai are seen sparring with one another, and the fight is declared a victory to Renji by Ikkaku Madarame, who declares that he won due to his experience. Ichigo declares to fight with his Zanpakutō next time, and is greeted by a man who offers him tea.

Renji and Ichigo oblige, taking tea from the man. He is called Seizo by the other members of the 11th Division, and he glances Ikkaku's way before proceeding.

Later, Renji, Ichigo and the other members of the 11th Division come across the remains of a town destroyed by Hollows.