Kai's duty as a member of the Human Protection Agency is to ensure that the four races from The Great War are kept sealed in their graveyards. Humanity has been at peace for 100 years, until one day a portal opens and the world he's known ceases to exist.
to make sure that the demons 
don't emerge from the graveyard?
الحرص على ألّا تظهر عشيرة
الشّياطين من المقبرة؟
que tu deber era evitar que
los demonios escapen del cementerio?
que tu deber era evitar que
los demonios escapen del cementerio?
assicurarti che i demoni
non si liberino dal cimitero.
garantir que os demônios
não saiam do cemitério?
чтобы демоны не вырвались
из могильника — твой долг.