Demon Daddy, Save My Mommy!

Noble lady Eliza leaves her family to be with her poor boyfriend Louis, and works hard to pay for his treatment even after she gets pregnant. But Louis is actually the Demon Lord, and he fakes being poor and ill just for a bet. When she finds out and run away, Louis finally realizes his faked love has turned real and goes after her, only to find her place burnt down to ashes. He thinks she is dead, but she survives and gives birth to Stella. Five years later, she's dying from the injury, and Stella brings her back to his realm, trying to save her. But Eliza's stepsister Julie never wishes them well, and will do anything to stop their family reunion.