Kimetsu No Yaiba Episode — 7

: For the first time, Nezuko actively participates in a fight to protect humans, proving she is a capable ally who does not need constant protection.

For a deep dive into the lore behind these characters, you can check the Kimetsu no Yaiba Wiki . Kimetsu no Yaiba Episode 7

: Tanjiro tracks a scent in Asakusa and finds Muzan Kibutsuji living as a human with a family. Muzan creates a distraction by turning a random passerby into a demon, forcing Tanjiro to stay behind while Muzan escapes. : For the first time, Nezuko actively participates