Yuki Cross (黒主 優姫, Kurosu Yuuki) is a student of Cross Academy's Day Class and one of the School Guardians, along with Zero Kiryu. She is later revealed to be a Pureblood Princess of the Kuran family and is able to return to her Vampire status by Kaname Kuran, subsequently becoming Yuki Kuran (玖蘭 優姫, Kuran Yuuki). Following this, she leaves Cross Academy but later returns in their Night Class to help the students coexist as originally planned.