[ESCORT] There are two types of Escort; Mystic Beasts and Humans. Escorts send lost souls to afterlife by performing the passing ritual.

[PASSING RITUAL] The process of sending a lost soul to after life by having the two Escort hold the lost soul's hands.

[MYSTIC BEAST] Perceived as guardians of nature, The Goddess of Death decided to capture all of them as most of them do not overseer their respective territories, but just cause trouble for humans.

[LOST SOUL] Deceased people who are not satisfied with the way their life ended, after a month they will turn into a Demon.

[DEMON] The only spiritual beings that can interact with the physical realm. These beings are extremely agressive towards humans, people that are killed by a Demon will not only die but also purge the victim's soul.

[PURGING] The process of erasing the existence of a spiritual being making them unable to go to afterlife.

[REAPER] Spritual beings that are assigned to purge Demons with the help of their Weapon from Death.

[WEAPON FROM DEATH] These are weapons made by the Goddess of Death. Usually used by Reapers as this is the only thing that can purge spiritual beings.

[GODDESS OF DEATH] She decide who dies ,and when they'll die. If a supernatural phenomenon caused a person's death, she will not allow their death and will return the dead's soul to earth.