a manga and anime series written by Matsuri Hino. The series premiered in the January 2005 issue of LaLa magazine and still on-going. Chapters are collected and published in collected volumes by Hakusensha, with eleven volumes currently released in Japan. The manga series is licensed in English by Viz Media. The English adaptation premiered in the July 2006 issue of Viz's Shojo Beat magazine.
Vampire Knight primarily takes place in Kurosu/Cross Academy, a presstigious private school with an unusual class structure. The students are divided into two classes: the Day Class, which is made up of ordinary students, and the Night Class, an an elite group of 'beautiful people'. Unbeknownst to the majority of students, and even most of the staff, the Night Class is made up entirely of vampires. The heroine, Yuki, one of the few people who knows the secret of vampires. She serves as a Guardian with Zero, a handsome boy who lost both of his parents because of vampires. Together, they maintain the peace between the Day Class and Night Class.