Hundreds of years ago a great war rage out, but this wasn't an ordinary war this war consisted of Angels, Devils and Fallen Angels as the war rage on the humans were brought into it and forced to pick a side, after many life's were lost the war didn't seem like it was going to end, as they battle feild was covered in the corpses of mostly humans, a group of 4 humans had enough they ssaw their friends, family, loved ones all die and they had enough they asked their different leaders that humans had no part of this war and they wanted to be left along, but they were laughed at as they walked out they each gave the leaders of each factions along with the race a chilling warning

"you will see that those you call weak are more terrifying than you could ever become"

The next few days the faction leaders noticed something, one by one each part of their army was being taken out, each camp they set up was being destroyed, each scout they sent of behind enemies lines would never come back, but then it happened the 4 Satan's were killed along with God but what shocked everyone was that there was no sigh of a fight, in the middle of the bodies was a devil. Everyone stopped fighting and looked to see the bodies of both God and The 4 Satan as well as a devil in between them

As everyone got closer they saw the devil was on the ground shaking like a leaf and as white as snow, Sirzechs walked to the man and placed a hand on him

Sirzechs : "what happened here did you kill them"

Devil : "t..they warned us"

Sirzechs : "who warned us"

Devil : "you have to stop the war, or they will come again"

Sirzechs : "who will come what has gotten a devil so scared"

Just then an explosion was heard everyone turned and had a look of shock on them and on the side of a large mountain was a symbol, a symbol that would strike Fear into the hearts of every member of every Faction, a symbol of a group of humans that would let anything stand in their way of protecting what they care about, a symbol that the traumatised Devil summed up in one little word...

Devil : "G..Ghosts"