One popular plot is Kakashi taking on a father - like role. He might train Naruto from a very young age, using his own unique skills and knowledge. This often leads to Naruto growing up even more powerful and having a closer bond with Kakashi than in the original series.
Another plot could be Kakashi trying to protect baby Naruto from various threats. Maybe there are new villains or political forces in the Hidden Leaf Village that pose a danger to Naruto, and Kakashi has to use all his wits and strength to keep him safe. This creates a lot of action - packed and emotional scenes in the fanfiction.
They tend to be popular when there are new developments or plot twists in the Naruto series that inspire fans to create such fanfics.
A common plot is the development of an unlikely bond. Sesshomaru, who is usually cold - hearted, gradually warms up to baby Kagome. Another plot point could be Sesshomaru protecting Kagome from various threats, like other demons or even humans who might see her as an oddity. For example, he might have to fight off a group of demons who sense her spiritual power even as a baby.
One popular plot is Naruto being transported to a modern world full of advanced technology and having to adapt. He might use his ninja skills in unexpected ways in this new environment.
One common plot is going back to prevent a major disaster. For example, they might go back to stop the Uchiha massacre. This gives them a chance to change the future of the ninja world.
One of the popular ones is 'Time - Twisted Bond' where Female Naruto and Kakashi are accidentally sent to a time before the Fourth Great Ninja War. They work together to stop a hidden conspiracy that was brewing at that time. It has great character development and action scenes.
A popular Kakashi and baby Naruto fanfic is about Kakashi accidentally time - travels back to when Naruto was a baby. He uses his knowledge of the future to try and make Naruto's life better from the start. He trains Naruto in secret, helps him with his chakra control, and also makes sure Naruto has a stable emotional support system, which in turn has a huge impact on Naruto's growth.
In some fanfictions, Kakashi might be the one to help Naruto deal with the loneliness he feels because of being an orphan. He could take Naruto on little outings around the village, sharing stories about his own past and making Naruto feel like he has a real family with Kakashi as his daddy.
The appeal lies in the fact that it gives a chance to rewrite Naruto's early life in a way. In these fanfictions, Kakashi can be the positive influence that Naruto really needed at that young age. It also allows for exploring different character traits of Kakashi, like his paternal side which we don't see much in the original series.
You can try fanfiction websites like FanFiction.net or Archive of Our Own. Just search for 'Kakashi finds baby Naruto' on their search bars, and you'll likely find some relevant fanfictions.
It's hard to say exactly how popular they are. Fanfiction is a vast and diverse world. Some people might be interested in such out - of - character and controversial storylines, but overall, it's likely not as popular as more traditional fanfictions that stay true to the spirit of the Naruto series. Since Kakashi is a beloved character and cheating is not a trait associated with him in the original, many fans might be put off by this concept.