My weird vampire BF

When modern girl Chiara unwittingly travels back in time to the Middle Ages. In an age of knights, nobles and magic, she always thought she was born a commoner and try to acts as a normal girl. But one day she was told she was the illegitimate daughter of a prominent nobleman. Before her shock was over, she was forced to married to a stranger. How does the modern girl Chiara, who yearns for freedom, survive in this mysterious era? How will she choose? This is the story of a modern time travel girl who falls in love with a vampire in the Middle Ages.