Nezuko Kamado Size S (Demon Slayer: Kimetsu no Yaiba)

Nezuko Kamado (竈門 禰豆子) is a fictional character in Demon Slayer: Kimetsu no Yaiba. Nezuko and her older brother Tanjiro Kamado are the sole survivors of an incident where they lost their entire family to demons, with Nezuko being transformed into a demon, but still surprisingly showing signs of human emotion and thought. 
After an encounter with Giyu Tomioka, a demon slayer, Tanjiro begins his quest to help his sister turn into human again and avenge the death of his family. (wikipedia)