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.
but I can't use it since it's the girls' dorm.
pero no puedo usarlo por estar
en el dormitorio de las chicas.
pero no puedo usarlo
por ser la residencia de las chicas.
et dire que je ne pouvais pas
y aller à cause des filles !
ma visto che è nel dormitorio femminile
mas não posso usá-lo já que
 é no dormitório feminino.