Synopsis: Nise Seijou no Imouto ni Subete wo Ubawareta Watashi ga Hontou no Seijou deshita

偽聖女の妹にすべてを奪われた私が本当の聖女でした Born with a rare talent, she possessed the ability to banish nightmares and protect people from dark creatures. But even that wasn’t enough to shield her from betrayal—her own younger sister allied herself with the forces of darkness and stole her powers completely. Framed and branded as useless, she became the subject of humiliation by her family, and even her fiancé abandoned her without hesitation. Everything was taken from her, leaving her with nowhere to go. Yet, in the depths of despair, a shocking truth is revealed—the boy she once saved within a dream is no ordinary person, but the Crown Prince of the Empire himself! Could this fateful encounter be her turning point? Will she reclaim her stolen power and expose the hidden truth? A story of revenge and destiny, where the outcast girl rises to become the true saint who will change everything!