My-HiME

The Obsidian Prince Awakens (1x21)

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Nao attacks Natsuki, and Shizuru reveals herself to be a HiME while saving Natsuki. Meanwhile, Mashiro and Fumi go to confront the Obsidian Lord, who turns out to be Reito. Mikoto fights for Reito and defeats Mashiro and Fumi.