In this fanfiction, Naruto might experience some significant character development. He could initially be very confused and conflicted about the situation. On one hand, he has his mother as a servant, which is a strange and uncomfortable idea. This could lead to him being more introspective. As time goes on, he might start to see Kushina's value in a new light, not just as his mother but as someone who is loyal to him in this new role. This could make him more empathetic towards others in servant - like positions. He may also become more decisive in his actions, as he now has someone directly under his authority and has to make decisions regarding Kushina's tasks and well - being.
Naruto could become more confident. With Kushina as his maid, he'd have someone who truly believes in him at home all the time. He might grow out of some of his insecurities faster. For Kushina, she could develop a new sense of purpose. Instead of just being a memory or a lost hero, she's actively involved in Naruto's life again.
Kushina, on the other hand, might experience a loss of agency which could lead to her character growing in different ways. She could fight against Naruto's control, which would show her strong - willed nature. Or she could come to accept it and use it as an opportunity to guide Naruto in a different way. There could be a role reversal of sorts where she becomes the voice of reason in Naruto's head. And this could lead to a very different kind of relationship between them compared to what we know from the original story.
One possible development for Naruto is that he begins to show signs of leadership. Even as a baby, he might gather the other village kids around him and lead them in some small play - adventures. For Kushina, she could develop a more nurturing side. She might start to think more about the well - being of the whole village because she realizes that Naruto will grow up in this environment. So, she could be involved in activities that improve the living conditions in the village, all because of her love for Naruto.
Naruto could develop a stronger sense of responsibility. He is marrying Kushina, so he has to take care of her and think about their future. This might lead to him being more cautious in his actions. Kushina, on the other hand, may develop a more open - minded attitude. She might start to accept new ideas and ways of life that Naruto brings to her.
Naruto might become more confident. Being a dragon gives him new powers, and with that comes a sense of self - assurance. He may also become more solitary at first as he tries to understand his new form. But as he gets used to it, he'll start to integrate his dragon side with his ninja self.
One possible character development could be Naruto's role as an older, more established figure. Instead of being the young, energetic hero, he would be more of a father figure. His attitude towards the village and his comrades might be more paternal. He might be more focused on protecting Kushina and guiding her, rather than going on adventures as in the original story.
She could become more confident in her new identity. Starting as Harry from a different world, she'd have to adapt to being a ninja and Naruto's sister. This new role would force her to step out of her comfort zone and grow. For example, she might have to learn physical combat skills which she didn't rely on as much in the wizarding world.
Fem Naruto might develop a more motherly or nurturing side. Kushina was known for her strong personality and also her love for her family. Fem Naruto could inherit some of these traits and become more protective of her friends, almost like a mother figure to them. This would be a significant change from the original Naruto's character in some aspects.
In this fanfiction, perhaps Naruto's physical abilities are enhanced as the Kyuubi's kit. He might be able to move faster, jump higher, and his strength could be superhuman. Also, his relationship with Sasuke could change. Sasuke might see Naruto as an even greater threat or, on the other hand, an ally he needs to understand better. And Naruto could start to have a different understanding of his own identity and place in the ninja world.
Naruto would likely experience a significant shift in his personality. He might become more aggressive and less trusting as he turns into a monster. His friends would also change in their approach to him. For instance, Shikamaru, known for his intelligence, would have to come up with new strategies to deal with Naruto's new state. He might be more cautious around Naruto.