"Cross Academy: The Series" is a fictional narrative that revolves around a unique school where humans and vampires coexist. The academy is divided into two groups: the Day Class, which consists of human students, and the Night Class, made up of vampires. The story explores the challenges and relationships that arise from this unusual arrangement. The main character, Yuki Cross, serves as a guardian between the two classes, striving to maintain peace and secrecy. As she navigates her own complex feelings and the mysteries surrounding her past, the series delves into themes of friendship, loyalty, and the struggle between different worlds.