I recommend "The Record of Floating Bells" and "Phoenix Girl, Your Demon Lord Is Jealous Again"(The author is Meow Meow and Toad). Both novels are about the love story between a god and a demon lord. "Floating Bell Record" told the story of a demon lord and a proud Wu Ling. They came to the mortal world for a win or lose. In the process of getting along, they discovered each other's feelings and finally walked together. On the other hand,"Phoenix Girl, Your Demon Lord Is Jealous Again" was a story between Yun Jiu and Di Xuanyuan. The female lead fought monsters and leveled up, while the male lead was always the strongest. The development of their love was also very sweet. I hope you like my recommendation.