In female form, Naruto might become more sensitive to certain things. For example, she could be more aware of how she is perceived by others in the swimsuit. Her boldness might still be there but could be expressed in a different way, like being more sassy. However, her core values of loyalty and determination to protect the village would remain the same.
Well, Naruto in female form could show a more nurturing side. While still having that fiery spirit, she might be more likely to comfort others when in the swimsuit - clad form. Her competitive nature could also be channeled in different ways, like competing in beauty - related contests in addition to ninja battles. But overall, her essential Naruto - ness would shine through, just with a different gender - influenced flavor.
A plot could revolve around Naruto's female form being a swimsuit model for a new line of beachwear in the ninja world. She has to deal with jealous rivals and also use her ninja skills to protect the designs from being stolen. Maybe there's a mystery about the origin of the special swimsuit fabric that she has to solve too.
Naruto's personality might become more empathetic. As a female, he could be more in tune with the emotions of others around him. For example, he might be quicker to comfort a distraught friend.
Often in fanfictions, Kurama's human form and Naruto have a more complex relationship. They could argue at times, especially when Naruto wants to take risks that Kurama thinks are too dangerous. But at the same time, they also share some really tender moments. For instance, Kurama's human form might comfort Naruto when he's feeling down about his past or his struggles with the village. They would have a deep bond that goes beyond just being a jinchuriki and a tailed beast.
He might become more empathetic in his human form. Since humans have a wide range of emotions and experiences, Kurama could pick up on these and become more in tune with the feelings of others compared to when he was just a fox demon.
Naruto's usually bold and outgoing personality might become more sly and cautious as a female fox. Since foxes are often seen as clever and somewhat devious in folklore, Naruto could take on these traits. He would still have his core of determination, but it might be expressed in a more foxy way, like using trickery to outwit opponents.
In some fanfics, when in Kyuubi form, Naruto can be more aggressive. The Kyuubi's influence might make him less hesitant in battle and more direct in his attacks.
In a fanfiction with a berserk form, Deku's personality would experience a significant shift. He would become more primal in nature. His usual self - restraint and careful consideration of his actions would disappear. He might act on instinct more, like a wild animal lashing out at threats. His friendly and approachable demeanor would be replaced with a menacing presence. He could even have moments of confusion when he comes out of the berserk state, as if he doesn't fully remember or understand the actions he took while in that form. But over time, as he learns to control this new side of himself, he might be able to find a balance between his normal self and the berserk - influenced personality.
His relationship with Sasuke might become more of an equal partnership. With Naruto in his final form, Sasuke would recognize Naruto's new level of power and they could fight side by side against greater threats without the previous rivalry getting in the way.
Naruto's personality may not change drastically in terms of his fundamental values like loyalty and the pursuit of his dreams. However, as a girl, he might be more attuned to the social hierarchies among female characters. He could start to notice and react to the cattiness that might exist in some female - only groups in the village. This new awareness could add a layer of complexity to his interactions, but at the same time, he would still be the Naruto who wants to prove himself and protect the village at all costs.
He might become more brooding. Instead of his usual sunny and determined self, he could be more withdrawn as a dark cleric, constantly thinking about the implications of his new powers and the dark path he's on.