My professor's bite

A girl from an average family decided to study in a famous school in her country. There she met her grumpy professor who turns out to be a vampire. Her professor brought her to their world for reasons that are still unknown for her. The life of the professor and its empire are in danger and only her is expected to save it. But in exchange for her own life. But eventually, she fell in love with her professor. Will her professor reciprocate her feelings or will just use her for its own goals?