Kakashi would become more nurturing. In the original, he was a teacher, but as an adoptive father, he'd have to be more affectionate. He might show his face more often to Naruto, as a sign of trust, and be more open about his emotions.
The story could also focus on how Kakashi's decision to adopt Naruto affects the village's perception of Naruto. People might start to see Naruto in a different light, not just as the Jinchuriki but as Kakashi's son. This could lead to Naruto having a more positive experience growing up in the village, with less ostracism. Kakashi would have to navigate the politics of the village while also raising Naruto, which could add a lot of interesting twists to the plot.
The relationship can be developed through shared experiences. For instance, they could go on a mission together where Naruto is still young and inexperienced. Kakashi would protect Naruto and Naruto would learn from Kakashi's skills and strategies.
Kakashi would probably first check if Naruto is hungry or needs a diaper change. If that's not the case, he might hold Naruto close and gently rock him while humming a soft tune.
The ninja in the village, like Kakashi, would need to figure out how to handle this situation. They would have to ensure Naruto's safety while also trying to find a way to reverse the transformation. They might also have to deal with any potential threats that come as a result of Naruto's new form. For example, if other villages heard about it, they could try to take advantage of the situation.
In terms of the story's development, it could lead to a whole new arc. Naruto's transformation into a baby girl could be a sign of a greater threat to the ninja world. It might be related to some ancient curse or a new enemy's plot. And as he tries to figure out how to turn back, he would have to rely on his friends and his own inner strength in a different way than before.
In a normal Naruto - themed fanfiction world without violating the original essence too much, this would be a very strange and non - canon plot. However, if we were to imagine, perhaps some powerful jutsu or strange magic - like occurrence in the fanfiction universe could have led to this situation. But this goes against the normal relationship and character development in the original Naruto series.
The Naruto fandom would likely be very divided. Some fans might be intrigued by this unique and unexpected plot twist, seeing it as an interesting exploration of an alternate Naruto universe. However, many fans would probably be quite shocked and even appalled, as it goes against the traditional understanding of the characters and the series.
One heartwarming scenario could be Kakashi reading bedtime stories to baby Naruto. He might use different voices for each character in the story, making Naruto giggle. Another could be Kakashi teaching baby Naruto how to walk. He'd be super patient, holding Naruto's tiny hands as the baby takes his first wobbly steps. And Kakashi would definitely make sure Naruto is well - fed, cooking simple but nutritious meals for the little one.
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.