I'm not sure there are many fictions specifically about their births. But in the Naruto universe, Kakashi is an important character and Sakura grows to be a strong kunoichi. Maybe a birth - related fanfiction could explore how their early lives were influenced by the events around their births in a unique way, like how Kakashi's father's situation might have affected his early days, and for Sakura, how her family environment at birth set the stage for her to become a medical ninja later.
There may not be a lot of common fanfictions centered on their births. However, if one were to write it, for Kakashi, it could delve into how the legacy of the Hatake clan influenced his birth and the expectations placed on him from the very start. As for Sakura, it could be about how the normalcy of her birth in a civilian family contrasted with Kakashi's more ninja - centered family background. And then, the story could explore how these different beginnings led to their individual growths and the relationship they have in the Naruto story.
A fanfiction on Kakashi and Sakura's birth could be really interesting. It could start with the political and social situation of the Hidden Leaf Village at that time. For Kakashi, perhaps his birth was during a time of high - level ninja missions and secrecy. Sakura's birth might have been more ordinary in terms of the village's affairs, but her family's hopes and dreams for her could be a major part of such a story. It could also show how their birth years and the events in the village in those years ultimately led to their paths crossing later in life.