Perhaps she forms a unique bond with other female characters. For example, she might team up with Sakura in a different way, sharing more emotional and strategic moments. Since she is Dark Naruto, she could bring out a different side of Sakura as well. They could explore their own powers and how to use them to protect the village together.
Well, sometimes in 'naruto vs dark naruto fanfiction', a cool plotline is when Dark Naruto has some new powers that Naruto has to figure out how to counter. For example, Dark Naruto might be able to control shadows in a way that Naruto has never seen before. Or perhaps Dark Naruto has allied himself with a powerful dark force from outside the ninja world. Naruto then has to not only battle his dark self but also this new threat.
One interesting plotline could be the discovery of a new and powerful dark fire jutsu that only a select few can master. This jutsu might have unforeseen consequences on the ninja world, like disrupting the balance of power among the villages.
One interesting plotline could be the dark swordsman's origin. Maybe he was once a regular ninja who was betrayed and then turned to the dark side, finding power in the art of the sword. Another could be his interactions with the main Naruto characters. For example, his battles with Sasuke, where they both have different sword - based fighting styles, which could lead to some epic showdowns.
Perhaps a plotline where Naruto, as a girl, has to face different challenges in the ninja world. Like, some male characters might treat her differently, either underestimating her or having romantic interests in her that she has to navigate while still trying to prove herself as a strong ninja. In this fanfiction, she could also form unique friendships with female characters that she didn't have as a boy.
One interesting plotline could be Naruto trying to adapt to the social and physical differences of being a girl while still maintaining his ninja skills. For example, he might have to learn new ways to fight as his body is now different. Another could be how his friends react to this sudden change, like Sasuke being initially confused but then coming to accept Naruto's new form.
One interesting plotline could be how Naruto, now a girl, uses her unique perspective to change the way she approaches relationships in the ninja world. For example, she might form different kinds of friendships with her male counterparts, like Sasuke. Another could be how she adapts to the physical and social changes. Since she's a girl, she might face different expectations and challenges in training and in the ninja hierarchy. Also, her interactions with female characters like Sakura could be completely transformed, perhaps leading to a stronger bond between them as they now share more common experiences.
One possible plotline could be Naruto, as a girl, having to deal with the different expectations of the ninja world. For example, she might face more challenges in being taken seriously as a strong ninja. Another could be her relationships with other characters changing. Her male friends might start to see her in a new light, leading to some interesting friendship or even romantic developments.
Another plotline could be centered around Naruto's relationships. As a girl, she might attract different kinds of attention from male characters. This could create some comical or even tense situations, especially if Naruto is still trying to maintain his focus on becoming Hokage while also dealing with these new romantic or platonic interests.
One interesting plotline could be Naruto's journey as a 'dark godlike' figure in the ninja world. His newfound power might attract various female characters to his side, creating a harem. For example, he could use his powers to protect the village in a different way than before, and the female ninjas could be in awe of his abilities and develop feelings for him.
Another plotline could be Naruto's transformation into a 'dark emperor' being a result of some external force or curse. He then has to find a way to break free from it while still maintaining his new - found power and authority. This could lead to some really emotional and action - packed moments in the fanfic.