Webnezuko kamado from the anime series demon slayer:
Kimetsu no yaiba carries a bamboo with her mouth closed over it, which has several significances.
Her brother uses it as a muzzle to control her instinctual desire of consuming human flesh since she turned into a demon.
Webby donning the bamboo muzzle, she visibly attains a tangible representation of her newfound peaceful intentions.
By masking her demon features behind the bamboo lattice, nezuko ensures that her true nature remains hidden from those she encounters.