~~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...
We will travel to the other side, 
souls and all, and become part of it.
سنسافر إلى الطرف الآخر حيث الأرواح
وما إلى هنالك ونصبح جزءاً منها
Wir reisen auf die andere Seite mit Leib
und Seele und werden zum Teil des Siegels.
Sellaremos nuestras almas con ellos
Sellaremos nuestras almas con ellos
Nos âmes seront emprisonnées
à l’intérieur
Noi e le nostre anime diventeremo parte
del sigillo stesso, fondendoci ad esso.
Vamos viajar pro outro lado, com alma
e tudo, e nos uniremos à barreira.
Мы заточим внутри свои души
и станем его частью.