Tamayo

Blood Demon Art: Pharmacology

Tamayo suppressed her own hunger for blood centuries ago and now channels her demon physiology into medicine, formulating drugs, poisons, and antidotes, including the science behind curbing Nezuko's need to eat humans. She is not a member of the Twelve Kizuki or the Demon Slayer Corps, but works as an independent ally to Tanjiro and the Corps against Muzan.

Tamayo is a demon woman with long black hair, a beauty mark near her eye, and an elegant kimono; unlike most demons her eyes and manner appear calm and gentle rather than feral.

Tamayo is compassionate, intelligent, and driven by guilt over the humans she killed while under Muzan's control, dedicating her long unnatural life to finding a cure for demonism.