In our beloved Earth, spirits are in every corner.They are like the humans in the earth.Actually,everyone who leaves the Earth turns into spirits. The spirits can choose where they will stay( Abyss ,Eden,or Spirit World ).Like the humans, spirits can still be filled with darkness. Then a spirit judge will terminate that spirit.Dark spirits know as Detros and Spirit Judges were powerful being not in Abyss ,Eden,or in Spirit World.Having power in Abyss,Eden ,or in Spirit World is not a big issue, but in Earth it is. So,the Jugdes will be guarding the Earth from any spirit that will trespass.....