From Demon Slayer, The sister of Rui's fake demon family, she has forgotten her identity from constant abuse inflicted by Rui and her father. She is gentle and calm, but can break down into tears if pressured hard enough. She has a tendency of being naive and overly trusting. She is an abnormal demon since she retained her emotions which lead to her being plagued by guilt whenever she eats human flesh. She cannot age and can only be killed by sunlight, nichirin swords, or wisteria poison.