For thousands of years, the forces of Heaven and Hell have been engaged in an apocalyptic war, which was hidden from the quotidian world. During the first and middle stages of the conflict, the angels were able to eradicate countless demons, turning the tide of the war in their favor. However, demons hold an advantage over angels: they can be re-created from corrupted deceased human souls. As such, Lucifer began gaining more and more ground, until only eight angels (except Archangels) still stand. Given the circumstances, Hell is seen as the inevitable victor.While the soldiers of both kingdoms are able to engage into combat, Lucifer and God themselves cannot, as they are the ones sustaining the very fabric of their respective realms. However, they can visit the quotidian world by possessing a vessel.The fate of the world remains unknown...