The gateway to the netherworld continues to expand to the point where it has started to consume the real world. Complete demise creeps ever closer as time passes. After miraculously managing to rescue Hiyori, the girls prepare to face Princess Tagitsu with the hope and fate of the world resting on their shoulders.
That it is the border between 
this world and the netherworld.
.أنّه الحد بين هذا العالم والعالم السفلي
Dass dies die Grenze zwischen
dieser und der Unterwelt ist.
Que está en la frontera
entre este mundo y el inframundo.
Que está en la frontera
entre este mundo y el inframundo.
C’est la frontière
entre le réel et l’au-delà.
Ci troviamo di fronte al confine 
tra questo mondo e gli inferi.
Que aquilo é a fronteira entre
este mundo e o mundo inferior.
Это граница между мирами,
тем светом и этим.