Users either are or can transform into a Onryō, spirit from Japanese folklore who is able to return to the physical world in order to seek vengeance using the spiritual powers they gain after death. While male Onryō exist, the majority of them are women, usually young women, with long, stringy black hair that covers their face, clad in a white burial kimono or shroud. Their face itself is often quite ghastly to look upon. Their deaths are often caused by the suffering visited upon them by the capricious whims of their male lovers.