~~The following program contains adult themes and scenes of violence and sexual assault that may not be suitable for some viewers and is inappropriate for children. The content is intended for mature audiences only.~~

Centuries ago, vicious and bloodthirsty demons who were immune to all manner of weaponry plagued mankind. Humanity's cries for help brought forth the Idaten; battle deities who would use their incredible speed to hunt the demons down, and then seal them away. In the following 800 years of peace, the Idaten have not had any enemies to fight. But that is about to change...
I mean, not that any human's capable of that.
مع أنّه لا يوجد بشريّ قادر على ذلك
Nur dass ein Mensch
kaum so alt wird.
Aunque si es humano es imposible.
Aunque si es humano es imposible.
Enfin,
c’est impossible pour un humain.
Beh, per un umano però è impossibile.
Bom, mas humanos não viveriam tanto.
Ну, вряд ли такие люди бывают.