Anna is Lady-in-Waiting to Princess Catue Dragundalla and her closest friend. She deeply admires Catue, viewing her as a heroic figure and relying on her protection during Guignol's invasion. Her vulnerability surfaces during a near-rape experience by a feral dragon, later revealed as the transformed King Lawrence. Catue intervenes to save her, reinforcing Anna's dependence.

Tragedy deepens when Queen Nina, under Guignol's mental control, sexually assaults Anna. During the assault, Anna calls out for Catue's help, revealing her desperation and shattered trust in the once-kind queen. This event marks the loss of Anna's virginity through rape.

Anna's ultimate fate mirrors other female survivors of Dragundalla. In both the anime and visual novel's bad endings, Guignol condemns her to eternal servitude as a sex slave for his monster army after Catue fails his seven-day challenge. This outcome highlights her victimhood within the invasion's systemic brutality.

Anna is absent from the bonus OVA episode depicting an orgy involving Catue, Nina, and the monsters. Her whereabouts during this event remain unaddressed, leaving her final onscreen appearance ambiguous within the anime continuity.