Demon

A Demon is a supernatural creature born within the Underworld, they are usually hostile and unintelligent.

History
The Demons first appeared on Earth after a tear within the fragile walls of reality appeared. A Demon known as the Kyonshi laid waste to a settlement of early Neanderthals, it was only stopped when the Homosapiens set it alight and it burnt to death.

Since that day humans trained to defeat such creatures, should they ever appear again. Demons tend to break through onto Earth whenever a tear appears.

In the modern day world the Divine Council has an entire division dedicated to training Exorcists in order to combat the increasing frequent Demonic Tears.

Species of Demon

 * Nattodesu, a weak Shinigami minion, although a lot more powerful than a regular Demon.
 * Fire Demon, a Demon born within the flames of the eighth layer of the Underworld.
 * Shinigami, a Death God that inhabits a temple on the twelfth layer of the Underworld.
 * Hisan, a Demon made of pure misery that's only purpose is to exist.
 * Waira, a large troll-like Demon that lives in mountains.
 * Akkorokamui, a huge octopus Demon that guards the gateway to the forth layer.