As the Chosen Wage Slave, I Won't Surrender to the Villainous Queen

Entrusted with command in the midst of a defeated army, summoned in a time of crisis, I saved the nation from disaster and propped up a collapsing empire. But I'm just a Chosen Wage Slave. To avoid being left to die in the desert by the big sister I just met, I did a few tiny things. Even someone as lowly as me won't surrender to the villainous queen... But, Your Majesty, would you be interested in working for my sister with me?