Rent Vampire Knight: Series 2: Vol.4 (2008)

Yuki's earliest memory is of a stormy night in winter, wherein she was attacked by a vampire...And then rescued by another. Now 10 years later, Yuki Cross, the adopted daughter of the headmaster of Cross Academy, has grown up and become a guardian of the vampire race, protecting her savior, Kaname, from discovery as he leads a group of vampires at the elite boarding school. Contains Episodes 11-13.