The book looked old, but its contents were still perfectly readable. The title read: "The vicious demon princess and the worst war for humanity". I opened the first page and began reading.
"The angels came up towards humans with a sort of peace treaty. They would guarantee them safety for their joined involvement in the war against the demons. Usually humanity would be split to both factions, equalizing the numbers on the battlefields. They also were the ones to die first, so most wars had a high number of deaths on the human side compared to inconsequential loses from both celestial races.
But this time instead of getting involved in the war over time, the angels came up to us before it even started. They put aside their inborn hate for humans to finally get rid of their arch nemesis, the demons, once and for all.