In the fanfiction, Kushina's possessiveness could be manifested in various ways. She might be very controlling of Naruto's daily activities. For instance, she would decide what he eats, when he sleeps, and how he spends his free time. Also, if there are any female characters showing interest in Naruto, Kushina would be quick to step in and make it clear that Naruto is 'hers' in a sense. This could create some interesting conflicts in the story, as Naruto might feel suffocated by her over - protectiveness at times, while also understanding that it comes from her love for him.
One reason could be that she lost so much time with Naruto due to her early death in the original story. So in the fanfiction, she's overcompensating for that lost time by being possessive.
Well, in fanfic, Kushina's possessiveness can be seen in her reactions to Naruto's relationships. If Naruto shows interest in a girl, Kushina might be very possessive and try to interfere. She might think no one is good enough for her son. Also, she could be possessive about Naruto's time, always wanting him to spend more time with her instead of on missions or with his peers.
Another aspect could be that the fanfiction delves into how Kushina's presence affects Naruto's relationships with others. For instance, his relationship with Sasuke could be different. With a strong maternal figure in his life, Naruto might be more stable emotionally and be able to approach Sasuke in a more understanding way, which could potentially change the whole dynamic of their rivalry and friendship.
In this fanfiction, Gaara's possessiveness could be demonstrated in different ways. Firstly, he might be possessive in terms of her time. He wants to spend as much time as possible with her. Secondly, he could be possessive about her emotions. He doesn't want her to be too friendly with other guys as he fears she might develop feelings for them. Also, he may be possessive about her safety, always being on guard and ready to fight off any threats to her.
Kushina's possessiveness could initially slow Naruto's growth. If she's too overprotective, he might not get the full experience of taking risks and learning from his mistakes. For instance, she might prevent him from going on dangerous missions early on.
The comfort from Kushina in the fanfiction might also inspire Naruto to be a better person. He might strive to live up to the values his mother represents, like kindness and perseverance. Her presence in his life, even if just in the fanfiction, can be a guiding force for him, making him more determined to protect those he loves and make the world a better place.
Naruto would become more confident in his abilities. With Kushina's training, he would have a better understanding of his Uzumaki heritage and the power that comes with it. This new - found confidence would show in his battles and his interactions with others.
At first, they would likely be a bit awkward since they've never really interacted before. But soon, the bond of mother - son would strengthen. Naruto would share his adventures with Kushina, and Kushina would listen intently, offering her own experiences as an Uzumaki. They would grow to understand and support each other deeply, with Kushina guiding Naruto in both his personal and ninja life.
Kushina's training in the fanfiction might also impact Naruto's mental state. Knowing that his mother is there to train him gives him more confidence. He feels more connected to his family and his Uzumaki heritage. This new - found confidence reflects in his battles, where he is more fearless and decisive.
Kushina would be extremely worried. She would rush to Naruto's side immediately and start using her medical knowledge or any available resources to help him get better.