Moreover, there was a love line between the two of them. Were there any similar novels recommended?

It was a novel I read a few years ago. It was about time travel. The female protagonist was a special forces soldier who time traveled, and the male protagonist was the king of the demon world. The female protagonist's mother had no objections and knew the identity of the male protagonist. She made a deal with the male protagonist to protect her woman for as long as possible. During a war, the male protagonist needed to drink human blood, so the female protagonist gave her blood to the male protagonist. In fact, this was planned by the male protagonist.

Answer 1

I recommend "The King's Tyrannical Fox Pet" to you. This book is an ancient romance novel. The female protagonist is a reborn female special forces soldier. After waking up, she became the contract pet of the Ninth Prince, and the male protagonist is the king of this demon world. The story was full of sparks and emotional entanglements between the male and female protagonists. I hope you like this fairy's recommendation. Muah ~😗