In Tokyo in 2013, a poor performing salaryman is fired, and later, pushes the heartless supervisor who fired him in front of a train. As the supervisor falls, time stands still and he hears the words of God coming from the people at the station. He says that he does not believe in God, nor the devil, so calls the entity Being X. Being X decides to reincarnate him as a baby girl, Tanya, in 1913 in Berun, a place that parallels Europe of that time. Tanya grows up in a poor orphanage where it is discovered that she has an aptitude as a mage. While still a young girl, rather than be conscripted, she volunteers for the military as an opportunity for advancement. She does well and is entrusted with training new students although she is quite ruthless and brutal. In 1923 at the age of 9, Tanya acts as an artillery observer while on maneuvers at the Northern Theater Force Garrison when the country is invaded by the Entente Alliance. Lieutenant Colonel Anson Sioux leads a company of the 5th Air Mage Battalion after Tanya who is ordered to stay and delay them. She manages to delay them, relishing the battle, but is badly injured. Later, back at Garrison Headquarters hospital, Tanya is awarded the Silver Wings Assault Badge, but hopes she isn’t sent to the battle front. Instead, she is dressed up and lauded as a hero of the Empire.