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.
And if the sender is Dr. Nayuta?
Und wenn Doktor Hayuta
das Signal gesendet hat?
¿Y si lo envió la doctora Nayuta?
¿Y si lo envió la doctora Nayuta?
Et si les signaux provenaient
du docteur Nayuta ?
E se il mittente fosse la Dottoressa Nayuta?
E se o remetente for a Dra. Nayuta?