is demon slayer: kimetsu no yaiba episode 39 filler?

As Tanjiro continues to battle against Daki’s powerful attacks using the Hinokami Kagura, Daki’s power increases even more when her Belts return to her body after escaping Uzui and the other’s attacks in the nest. The situation intensifies when Daki’s attacks are directed at the town’s citizens, who begin to come outside upon hearing the commotion…