Jeanne du Leblanc is a knight of the Freyjagard Empire, distinguished by magenta hair styled in a long ponytail with bangs, fair skin, and piercing green eyes, her face perpetually set in a stoic expression. As a high-ranking commander, she is driven by unwavering principles of justice and fierce loyalty. She belongs to the Azure Brigade, a faction of reformist nobles dedicated to improving commoners' lives and dismantling the empire's oppressive systems. This commitment fuels her actions. Her significant narrative involvement ignites when she intervenes to save a child from danger, an act witnessed by Shinobu Sarutobi. This demonstration of courage and integrity sparks their initial encounter and alliance. Recognizing Shinobu as an outsider yet valuing her integrity, Jeanne later aids her escape from peril, reinforcing her dedication to just conduct regardless of risk. Together, Jeanne and Shinobu collaborate to oppose Gustav, a key antagonist embodying the empire's despotic rule, focusing their efforts against his tyranny and the oppressive structures upheld by the nobility.