Fem Naruto's character could be developed with a focus on her relationships with other female characters. Maybe she forms a special all - female ninja team and learns different things from them. This could influence how she interacts with Shisui. Shisui could be developed in a way that his Sharingan powers have some unique side - effects that only Fem Naruto can help him deal with. For example, his Sharingan might start to affect his emotions in a way that Fem Naruto, with her understanding nature, can soothe.
For Fem Naruto, her character could be developed to be more in touch with her femininity while still maintaining her strong - willed and determined nature. She could use her charm in addition to her combat skills to get what she wants. Shisui, on the other hand, could be developed to be more open about his feelings. In the original, he was rather reserved. In the fanfiction, he could be shown to be more vulnerable, especially around Fem Naruto.
Dark Naruto could be developed to have a different set of ninja skills. He might learn some forbidden jutsu on his own in his journey to the dark side, which gives him an edge over others. In terms of Fem Sasuke, she could be more in tune with her feminine side. Instead of just being cold and brooding like the original Sasuke, she could use her charm and intelligence to get what she wants. For instance, when dealing with enemies, she might use her wits to outsmart them rather than always relying on brute force. Also, Dark Naruto could have a more philosophical side, constantly questioning the nature of power and the ninja world, which is different from the more impulsive original Naruto.
For fem Kuroko, her character could be developed with more emphasis on her femininity. She might use her charm or intuition in ways that male Kuroko didn't. For example, she could be more in tune with the emotions of her teammates and use that to boost team morale. Aomine, on the other hand, as a female could be developed with a different kind of competitiveness. Instead of just brute strength, she might use her intelligence and strategic thinking more, like finding ways to outwit opponents through psychological warfare.
Dark Naruto could be developed by giving him new abilities that are a result of his darkness. This would change his fighting style and how he approaches problems. Karin could be developed by making her more of a strategist. Instead of just being a sensor, she could use her knowledge of the ninja world and her understanding of Naruto to come up with plans. For example, she could figure out ways to help Naruto control his dark side better through certain training regimens.
In some fanfictions, Shisui's Sharingan has a different color or pattern. This is a simple but effective way to make it stand out. For example, it could be a deeper red or have an extra swirl in the pattern.
In terms of relationships, fem Naruto could have a more complex relationship with Sasuke. Maybe she doesn't have the same kind of one - sided crush as Naruto did in the original. Instead, they could start as rivals but slowly develop a mutual respect and understanding that is based on their shared experiences and growth as ninjas.
For the female Naruto, her character can be developed by emphasizing her femininity in a way that affects her ninja skills. For example, she might be more agile or have a more precise chakra control. Sasuke, on the other hand, could be developed to be more open to her influence. Instead of his usual brooding self, he could be shown to be gradually softened by her presence. Maybe he starts to show more emotions and becomes more communicative.
For Hinata, her normally shy and reserved nature could be twisted into a more calculating and cold - hearted one in the dark fanfiction. She might use her byakugan not for protection but for manipulation. Naruto, on the other hand, instead of his usual optimistic self, could become more cynical after facing multiple betrayals, especially if Hinata is involved in some of them.
Inuyasha's personality can be developed by showing his growth in accepting Fem Naruto. At first, he might be dismissive of her because she's not from his world and seems weak compared to him. But as he sees her tenacity and the power of her ninja techniques, he could start to see her as an equal. His own issues with trust, especially after his past with Kikyo, can be further explored in relation to how he trusts Fem Naruto and whether he's willing to let her into his heart and share his secrets.
For Naruto, his existing traits like his determination and his never - give - up attitude can be further emphasized in his relationship with Fem Akamaru. He could be more protective of her. Fem Akamaru could be developed as a very perceptive character, able to sense things that Naruto might miss. This would add an interesting dynamic to their interactions.
For Naruto, his character could be developed by showing his determination to protect Fem Sasuke even more. Since she is in a female form, he might feel an even stronger urge to keep her safe. He could also grow in his understanding of femininity through his interactions with her. For Fem Sasuke, her character could develop as she learns to be more open with her emotions towards Naruto. She might start to show a softer side that was previously hidden.