Mai-Otome 0: S.ifr  

Dancing Maiden 0: S.ifr, My-Otome 0:Sifr, Otome 0, 舞-乙HiME 0 ~S.ifr~, My-Otome 0: S.ifr, Mai-Otome Zero, My-Otome Zero

My-Otome Prequel is a series that comes before the events in the My-Otome Series. It explores the backgrounds of Lena Sayers, mother of Arika Yumemiya and bearer of Lofty Crimson Jade / Blue Sky Sapphire GEM, as well as Sifr Fran, biological mother of Nina Wáng and former queen of Windbloom Kingdom, and the origins of Schwartz, Aswad, Garderobe Academy, its Five Columns, and other important elements. The kidnapping of Sifr and the revelation of Lena's GEM will have a significant impact on their lives and those around them in the future.