I know this is japanese but it reminds me of that one korean legend.
Korean Kumiho (Nine-Tailed Fox)
Liver-Eating Motive:
Kumiho often transform into beautiful women to seduce men and consume their livers or hearts to gain human form and life force.
Becoming Human:
They must eat human livers for a certain number of days or fulfill other conditions, like acquiring a special fox bead, to become permanently human.
Evil Nature:
Unlike their Japanese and Chinese counterparts, Kumiho are almost always depicted as malignant and bloodthirsty creatures.
