Spartan

The year is 1939 - it was that year that the Neuroi appeared. Nobody knows where they came from or what their ultimate agenda is, but the fact remains that their attacks drove people out of their towns and cities.

In 1945, Yoshika Miyafuji, who lost her witch powers during the Strike Witches' last assignment, has been studying to become a doctor. Shizuka Hattori, one of her cadets in the Imperial Fuso Navy, then arrives to deliver a message: Yoshika is to be transferred for study abroad in Europe.

After discovering that Neuroi are capable of communication with humans and making peace with the nest above Gallia the Witches squads are now on a mission to restablish communication when a sudden attack vanishes the Neuroi, they now discover a new and massive nest that just appeared covering almost all Europe. Ruthless and without mercy it annihilates allied forces along with Witches.

A group of high school teenagers are suprised one day to find that the citizens of Tokyo are turning into zombies. They band together to stay alive and escape.