is bleach episode 133 filler?

At the kendō club of Karakura High School, Mizuho Asano is shocked to discover several members of her team sitting around a table with bandaged wounds and demands to know how this happened, prompting one of them to reveal that they were ambushed by the kendō team of Kotei Academy, who viciously beat them with shinai in order to proceed unopposed to the regional championship tournament, though Mizuho is aghast at the team identifying themselves for an ambush.