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.
It's a dating simulator...
Es un simulador de citas que hicimos
para ayudarte con las chicas.
Es un simulador de citas
Ce simulateur est là
Lo abbiamo sviluppato appositamente
 per facilitarti le cose con le ragazze.
É um simulador de encontros