About two hundred years ago, during the war between humanity and the Great Demons. Humanity had somehow managed to seal what they thought were all the Great Demons, within a powerful artifact known as the Voidstone.
All the Curses of the Great Demons vanished, being unable to survive without their masters. But Demons had no such weakness, and remained a threat to humanity.
The Demon General known as Killard is in a destroyed town with his small army of Demons, waiting to hopefully receive some good news from their scout. A purple portal soon opens up in front of Killard, and a female Imp steps out of it. She was small in stature, reaching only about four meters in height, which was the average height for Demonic Imps.
Millena (The Demonic Imp): I've confirmed it, General. All the Great Demons really were sealed by the humans. (Millena informed him with a bow)
Killard (The Demon General): So we are now alone... The humans will no doubt come for us. (Killard spoke in worry)