is jujutsu kaisen episode 39 filler?

Dagon activates Horizon of the Captivating Skandha — his domain expansion that looks like a tropical beach and spawns endless fish shikigami with guaranteed-hit accuracy. Nanami, Maki, and Naobito are overwhelmed.

Megumi opens a hole in the domain using an incomplete Chimera Shadow Garden, disabling the sure-hit through the gap. Then Toji's resurrected body breaks in from outside and kills Dagon with bare hands — zero cursed energy against a special grade, won through pure physical supremacy.