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.
so all we could do was 
abandon the cities and run.
لذا كلّ ما استطعنا فعله كان
مُغادرة المدينة والهرب
konnten die Menschen die Stadt
nur aufgeben und fliehen.
Tuvimos que dejar las ciudades y escapar.
Solo nos quedó salir
de las ciudades y escapar.
et l’humanité a dû fuir la ville.
perciò abbiamo potuto soltanto
fuggire dalla città.
Então, tudo o que podíamos fazer
era abandonar as cidades e fugir.
поэтому людям пришлось
бросить города и бежать.