One possible plot could be that Sasuke uses some kind of rare jutsu accidentally while sparring with Naruto. This jutsu has the side effect of changing Naruto's gender. At first, Naruto is shocked and confused. But then, he (now she) starts to discover new aspects of the ninja world as a girl. For example, she might notice how differently she is treated by some of the male ninja. And Sasuke, feeling guilty, tries to find a way to reverse the effect while also protecting Naruto from any potential harm that could come from this new form.
Naruto's personality might not change drastically at first. He would still be as determined and head - strong as before. However, as a girl, he might become more aware of how others perceive him. He could become more empathetic towards female characters in the ninja world, understanding their struggles better. Also, he might be a bit more cautious in some situations, especially when dealing with male characters who might act differently towards him now.
One possible plot twist could be that Sasuke, now as a girl, has a different perspective on his past actions. Maybe he becomes more empathetic towards Naruto's ideals of peace. For example, instead of being so focused on revenge and power, he starts to see the value in building relationships within the village. Also, it could lead to some interesting romantic sub - plots, perhaps with Naruto or other characters having new feelings for Sasuke in this new form.
Naruto and Sasuke's relationship would definitely take a new turn. Naruto, who has always been chasing after Sasuke, might now feel a different kind of protectiveness. Their bond could become more complex, with Naruto having to re - evaluate his feelings. For other characters, like Sakura, she might be initially shocked but then develop a sisterly bond with Sasuke. Kakashi, as their mentor, would have to guide them through this strange new situation and ensure that Sasuke is still able to contribute to the village in his new form.
She could also change in how she approaches relationships. Before, as a boy, Sasuke was more reserved in his interactions with others, especially with Naruto. But as a girl, she might be more forward in expressing her feelings towards Naruto, whether it's friendship or something more. This could lead to some really interesting character development arcs and new plot directions in the fanfiction.
Perhaps the story could explore how the other characters react. The girls in the village might be more accepting of 'female Sasuke' and try to befriend her. The boys, on the other hand, might be a bit jealous of Naruto's close relationship with her. And this new form of Sasuke could also bring out new abilities or powers, or at least a different way of using her existing skills, which would make for some interesting battles and plot twists.
Another character could be Hinata. She might be more shy around girl Naruto at first but then they could develop a strong friendship. And the Akatsuki members could also have different interactions with girl Naruto. For example, Itachi might see her as a different kind of threat or an interesting enigma, which could lead to some intense confrontations or unexpected alliances.
Well, usually it starts with Naruto using some sort of jutsu or magic (in the fanfic world). Then Sasuke suddenly finds himself in a female body. At first, he might be really confused and angry. But as the story goes on, he starts to experience things differently as a girl. For example, he might notice how people treat him differently. Naruto might also start to see Sasuke in a new light, and there could be some really interesting character development and new relationships forming between them.
Well, a cool plotline could be Naruto using her new female form to her advantage in missions. Maybe she can infiltrate places more easily as a girl. Also, there could be a plot where Naruto has to hide the fact that she was once a boy from some new characters she meets. This could lead to some really funny or tense situations as she tries to keep her secret while still being herself.
Her fighting style might become more fluid. As a girl, Sasuke could potentially rely more on agility and finesse rather than brute strength. She might incorporate more acrobatic moves into her combat, using her lighter frame to her advantage. For example, she could execute quicker dodges and more precise strikes.