A monster that is thought to be born from a fusion of the lingering regret of those who lost love and mamono mana. They reveal themselves after being drawn by the lingering regret of men who were rejected by the women they loved. They don’t have a fixed form. Instead, they read the minds of human men and appear in the form of a woman that the man had a one-sided crush on. Not only do they look like her, they also take on the woman’s memories, personality and abilities, making them their own.