Akuyaku Reijou no Oyome-sama

One day, Karina, a lady who has been groomed to be queen, suddenly has her engagement broken by her fiancé, the prince. Now he is sending Karina into exile while standing beside her sister, Aurora, instead. Exiled to the far north, where monsters are said to dwell, Karina ventures out to investigate the identity of a disturbing sound and has a fateful encounter in the snow...?