Auros no Youhei: Shoujo Leto no Tatakai

is the first volume of the Auros no Youhei light novel series, written by Ryosuke Sakaki and Illustrated by Akira Takahashi. It was released under the Dengeki Bunko Imprint in April 1995.

Synopsis
Another world created by the gods-Aulos. After many wars, the two major powers, Germania and Romania, are fighting for hegemony. In this battle involving neighboring countries, there were mercenaries who depended on their arms to live powerfully. The main character is Leto, an 18-year-old girl. Contrary to her still innocent features, she is known as her brilliant mercenary along with her buddy Casals. The two suddenly escort the old German knight Heidrich. Aiming at his secret book, the murder corps "Black Ant" stands in front of the three. Let's attack the enemy, the girl's cry, suddenly Berserk in the battle, and murder the enemy like a madman. What's with her ... Introducing a human fantasy where a girl fights, gets hurt, and wins a new life in a vast world.