Yuki Cross is a fictional character from the anime and manga series Vampire Knight, created by Matsuri Hino. She is the main protagonist and is known for her kind-hearted nature and strong sense of justice. Yuki is a human who was adopted by the Cross Academy headmaster after a traumatic encounter with a vampire. In the series, Yuki serves as a guardian at Cross Academy, a school that separates humans and vampires. She has a complicated relationship with two key characters, Kaname Kuran and Zero Kiryu, which drives much of the story's emotional conflict. Yuki's journey involves discovering her true identity and the secrets of her past.