Vampire Academy Book by Richelle Mead

Vampire Academy follows Rose Hathaway, a half-vampire (Dhampir) who is training to be a guardian for her best friend, Lissa Dragomir, a Moroi princess. The Moroi are mortal vampires, and the Dhampirs are their protectors against the Strigoi, immortal and dangerous vampires. As they return to St. Vladimir's Academy after a year on the run, dark forces threaten the peace within the vampire world. Rose must navigate the complexities of love, friendship, and the supernatural, all while facing the sinister Strigoi threat. The book explores themes of loyalty, sacrifice, and the challenges of living in a society filled with both mortal and immortal dangers.