Cattleya Yvette La Baume Le Blanc de La Fontaine カトレア・イヴェット・ラ・ボーム・ル・ブラン・ド・ラ・フォンティーヌ
Cattleya is Louise's older sister. She is physically weak from chronic illness. She has a gentle heart and Louise yearns for her. She also has a large bust, something that Saito immediately noted. She appears in the second season and is often seen with a variety of small animals.