Eléonore Albertine Le Blanc de La Blois de La Vallière エレオノール・アルベルティーヌ・ル・ブラン・ド・ラ・ブロワ・ド・ラ・ヴァリエール
Eléonore is Louise's blond oldest sister. She inherited her father's personality, which is stronger than Louise's own personality and is possibly the person Louise learned her sadistic tendencies from since she also looks down on common folk and uses a whip on Saito.