In the prequel to My-Otome, the events leading up to the My-Otome series are uncovered. The story reveals the origins of key characters such as Lena Sayers, who once held the highly coveted Lofty Crimson Jade / Blue Sky Sapphire GEM, as well as Sifr Fran, the former queen of Windbloom Kingdom and biological mother to Nina Wáng. The series also explores the beginnings of Schwartz, Aswad, and the Garderobe Academy, and delves into its Five Columns. As the plot deepens, the kidnapping of Sifr and the discovery of Lena's GEM have far-reaching consequences for their futures, as well as for those around them.