The Beast Emperor and I

When Princess Bellia Piolette is ordered by her father to marry Kastor's cruel crown prince who's known for killing his wives, she flees in the night. On the way, Bellia encounters a dying man named Khan and heals him before she's caught and imprisoned in the palace. There, she's miraculously reunited with Khan, who asks her to run away with him. But their time together is cut short when Bellia's forcibly sent to Kastor, where she discovers that her beloved Khan is not who she thought he was...

(Source: Tapas)