is bleach episode 113 filler?

At the Kurosaki Clinic, Isshin Kurosaki welcomes a returning Ichigo Kurosaki by hitting him in the side of the head with a flying elbow, only for Ichigo to not dodge the strike and instead be sent crashing to the ground, leaving Isshin startled and confused. As Yuzu Kurosaki berates Isshin for this and rushes to Ichigo's side in concern, a flustered Isshin claims he seems unusually depressed and assumes he scored poorly on a recent test at school.