The Familiar of Zero: Rondo of Princesses

 (ゼロの使い魔: 三美姫の輪舞, Zero no Tsukaima: Princesse no Rondo) is the third season of The Familiar of Zero anime directed by Yū Kō which ran from 6 July 2008 to 21 September 2008. It was succeeded by The Familiar of Zero: F.

Plot
Louise de la Vallière's and Saito Hiraga's adventures continue as not only master and familiar spirit, but also with passionate love for each other. More characters are revealed like Illococoo, the human form of Sylphid; Vitartial, an elf who possesses nature magic; Joseph de Gallia, the uncle of Tabitha and the antagonistic king of Gallia; and Beatrice von Guldenhorf, princess of a small and powerful country.