The mirror demon is one of the weakest among the fairies. The newly born mirror demon is no different from a human being, except that it has animal ears and tail. The mirror demon possesses the power and form of an animal when it is born, or a special ability, called an attribute. What mirror demons have in common is that they have weak abilities and can freely change their appearance. One moment, they may be a young woman, and the next moment, they may be an old man. However, regardless of gender, the prototypes are the most beautiful among humans, so they can easily be caught and sold by monster hunters or Taoists, and can be sold at a good price. Mirror demons with weak abilities may reveal their tails and ears unknowingly. Mirror demons with average or advanced abilities usually mix in human society, because nowadays Taoist magicians and monster hunters are generally extinct. However, it will still turn into an animal when it is severely injured (the mirror demon who has not practiced enough will show its ears and tail). There are very few mirror demons, very few. Due to human capture and trafficking, the number today does not exceed 10,000 at most. Because they are afraid of humans, they usually hide in deep mountains and old forests, spending their entire lives never coming out.
——Tien's Monster Catching Manual
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