
Anna Weiss, daughter of a duke in the Carlo Empire, escaped exile after her father was executed for treason and her mother imprisoned. She killed her escorting soldiers. Cutting her long hair, disguising herself as a man named Aaron, she infiltrated a warrior training camp on the empire's border, intending to learn military skills and avenge her family. Arthur, a sergeant at the camp and the emperor's younger brother, was ordered to capture Anna and carry out a secret order for her execution. After discovering Anna's true identity, he secretly covered for her on several occasions without reporting to his superiors. One was a vengeful figure in hiding, the other a member of the royal family ordered to hunt her down. Remnants of the Weiss family remained lurking on the border, awaiting her return.