This version of Kumi(short for Kumiho) was done by simplydikka/Dilyana/Innerweirdos. Simplydikka can be found at https://twitter.com/simplydikka.
Kumiho is a Korean Fox Spirit who has a moral compass. Based on the situation, she can choose to be good or bad. She can change her appearance in order to get what she wants especially from men. If she chooses to be bad, she often will eat the hearts of men. If she abstains from killing and eating humans for 1000 days, she will become a full human being.