Chisaki Sarashina (更科さらしな 茅咲ちさき Sarashina Chisaki? ) is a supporting character in the series. She is a second-year student at Seirei Private Academy, serving as the Vice-President of the student council, captain of the kendo club and the President of the Disciplinary Committee. Chisaki is widely regarded as one of the two most beautiful girls in her grade, alongside Maria Mikhailovna Kujou, and is known as the Donna (学園の征母ドンナ Gakuen no SeiboDonna?, lit. "Academy's Conquering Mother" ).