Kairyn
A Fox
Kiyomi's almost-human body morphed into a demon wolf.
Whenever she fall into sleep, Kiyomi would turn into her true form, a demon wolf.
The red feathers on her neck would sometimes glow a red hue. This signifies that it was producing heat.
The red feathers would sometimes catch on fire and rise to a very high temperature that would burn your finger if you just tapped on it.
Kiyomi will only die if she was in her demon wolf form. If all the long red feathers were to be plucked off or simply burn itself, she loses a part of her life span. Do not worry, there are other red feathers to be grown and once they are fully grown it will add onto her lifespan. Some feather would hold about 1 year of her life span. For example, if there were thirteen long red feathers, she would live 13 more years. Another way for the red feathers to be off is if it burns itself out. A fire would start from the tip and travel its way down, engulfing the whole feather. After a few seconds, the fire would slowly goes out, only to be left of a black feather. Then some time later, the feather would fall off.