Anime 47778 Kimetsu No Yaiba Yuukaku-hen Episode 6

Synopsis

As Tanjiro and Daki battle, Daki causes immense destruction to the district, taking the lives of numerous innocents. The enraged Tanjiro retaliates with an incredibly powerful series of Hinokami Kagura attacks, nearly slashing her neck, though Daki saves herself by transforming her neck into an obi, making it difficult to cut. The two continue fighting, and Daki starts to see distant memories of a similar figure to Tanjiro, memories which she surmises must belong to Muzan's cells in her body. Unleashing another barrage of attacks, Tanjiro nearly cuts Daki's neck again; however, he had been fighting without breathing, and a vision from his late sister saves him from suffocating. He collapses, struggling to catch his breath. When Daki approaches the injured Tanjiro, Nezuko appears and destroys her head with a kick. Daki remembers Muzan talking about Nezuko as a rogue demon who must be exterminated, and begins fighting her. Daki seemingly bisects Nezuko with ease, but is stunned to see her incredible regenerative power. Biting through her bamboo muzzle, Nezuko matures in appearance, and faces Daki, filled with rage.

(Source:Wikipedia)