An 'angel fiction book' may center around the hierarchy and different types of angels in a fictional universe. It could explore how they interact with each other, their powers, and their moral codes. It might also include elements of fantasy, like battles between angels and demons.
I'm not sure of a specific one off the top of my head. But you could try searching for it on online book platforms. Look for tags like 'angel', 'kidnap' and 'book' to narrow down the results.
"There Will Be an Angel Who Loves You for Me" was about the emotional entanglement between the female lead, Lin Jingyi, and the male lead, Li Yi. Lin Jingyi was a kind and strong girl. For the happiness of her family, she chose to leave her hometown and go to the big city to find her future. There, she met Li Yi, a rich, gentle, and responsible man. The two of them separated because of a misunderstanding, but both of them were worried about each other. In the end, the two of them reunited and faced all kinds of difficulties together. This novel was loved by the majority of readers and was hailed as a classic.
Of course there is. I recommend a light novel called "Douluo's Angel Summoning"! The story told that Bai Zhan had transmigrated to the Douluo Continent and possessed a magical system called the Angel City System. He could summon the angels from his memories, Kesha, He Xi, Liang Bing, Yan, and Leng from the system. From then on, the Douluo Continent had a group of winged "Heavenly Dragon People". The journey was full of challenges and adventures. I believe you won't be disappointed! I hope you like this fairy's recommendation. Muah ~😗