Yuki Kuran is a fictional character from the manga and anime series Vampire Knight, created by Matsuri Hino. She is a human girl who has a unique connection to vampires, particularly to Kaname Kuran, her adoptive brother, and Zero Kiryu, her childhood friend. Yuki's character is central to the story, as she navigates the complexities of her relationships and the world of vampires. In the series, Yuki serves as a guardian at Cross Academy, a school that separates humans and vampires. Her role involves maintaining peace between the two groups while uncovering her own mysterious past. Yuki's journey explores themes of love, identity, and the struggle between her human nature and the vampire world.