The female lead is a demon, and the male lead was turned into an immortal monster by the female lead when he was young. The female lead even married the male lead in an ancient novel.

This was an ancient novel about the love story between a monster and a human. The specific names might be " Eternal Lovesickness "," Ten Miles of Red Maiden "," Devil's Day ", etc. The female protagonist in the story may be a demon, and the male protagonist may be a human, but their fates are destined to be intertwined. In the story, the female protagonist often used various means to protect herself and the male protagonist. At the same time, they also experienced many difficulties and challenges, but in the end, their love got a happy ending.