June 1923 of the Unified Calendar.
The young blonde-haired and blue-eyed Tanya Degurechaff is completing the final course of the Imperial Military Academy. She is training as part of a unit on the third patrol line of the Norden military theater, paving the way to her bright future as an aerial mage.
However, the situation unexpectedly changes when the Entente Alliance trespasses on Imperial territory. Headquarters assigns scouting missions to available troops in the area, and Tanya is eventually forced to move on her own against an entire company of enemy mages.
With no clear path to victory and no way to hold until allied units arrive, Tanya reneges God once more before plunging into battle in an attempt to strike an ultimate gamble...
"It was a monster in the form of a little girl—."