Zero no Tsukaima :
Louise FranÃ§oise Le Blanc de La ValliÃ¨re is the main female character. She is a second year student at the Tristain Academy of Magic and a terrible mage who is often scorned by her fellow classmates. Because every spell she casts fails, she is nicknamed "Louise the Zero" after her zero success rate and zero attributes. The third daughter of the noble family La ValliÃ¨re who owns the north-eastern territory of Tristain.
The fact that Louise is voiced by Rie Kugimiya, who voiced Shana in J.C.STAFF's previous work Shakugan no Shana (incidentally, itself an adaptation of a light novel series) is a source of humour for fans. Her occasional call of "Urusai!" ("Shut up!") being used three times in the first episode of the anime is largely thought to be a reference to Shana's habit of repeating it in the same way.
She is named after Louise FranÃ§oise de La ValliÃ¨re, a French courtesan who was mistress to Louis XIV of France from 1661 to 1667.In Zero no Tsukaima F, the final episode, she gets married to Saito.(myanimelist.net)