Himekawa is a guilt-stricken by her failure to protect the citizens as they boarded the Tokyo megafloat.  When a mysterious radio signal is picked up by Atraxia, she leaps at the change to perhaps finally save a civilian.  But when Amaterasu arrives at the source of the signal, they find an enemy from another world, and one deeply connected to Himekawa's past.
Of course, I'm talking about the world
on the other side of that.
Na ja, wobei ich damit die Welt
auf der anderen Seite meine.
Aunque hablo del mundo
al otro lado de eso.
Aunque hablo del mundo
al otro lado de eso.
Enfin, de l’autre côté.
Ovviamente,
Claro, estou falando do 
mundo do outro lado disto.