Nezuko Kamado is the younger sister of Tanjiro in Demon Slayer: Kimetsu no Yaiba, the manga and anime series in which she is turned into a demon yet retains her protective feelings for her family. Because she wears a bamboo muzzle and rarely speaks, her growls, hums and other wordless sounds became one of her most recognisable ways of communicating. Clips of those sounds spread through anime edits, reaction videos and soundboards, where fans reuse them to signal anger, warning or stubborn determination.