I recommend novels such as " The Great Demon King's Group Pet, Little Demon Concubine,"" Today, I'm Spoiled by the Great Demon King Again,"" The Great Demon King's Sweetheart Pet,"" Acting Coquettishly to the Pathological Demon King," and " The Demon King Is By My Side." Among them," The Great Demon King's Group Pet, Little Demon Concubine " and " Today Was Spoiled by the Great Demon King Again " told the story of the Great Demon King doting on the female protagonist, while " The Great Demon King's Sweetheart Pet " was the story of the female protagonist traveling through different worlds in search of the Demon King's soul fragment. It was hilarious and sweet. " Acting Coquettishly to the Sick Demon King " and " The Demon King is Beside Me " were also about the relationship between the female protagonist and the demon king. The plot was interesting and touching. I hope you like my recommendation.