Season 1

Model student and class president U Ju lives strictly by the book until Na Young arrives to his class. Clueless about human life and hiding an impossible secret, the eccentric new transfer student turns U Ju's picture-perfect routine into utter chaos.

To protect her secret identity, Na Young strikes a private tutoring deal with U Ju. But just as their awkward study sessions begin to stir strange, brand-new feelings neither expected, another vampire, Yoo Hyeol, appears to disrupt their delicate new bond.