In the Naruto universe, Naruto is a powerful character. Hinata, while strong in her own right, is not as physically dominant as Naruto in many fan interpretations. Naruto's overprotectiveness can show his growth as a character who now has someone he cares deeply about. It also creates drama and tension. For example, when they face enemies together, Naruto's overprotective nature can lead to him making rash decisions or Hinata trying to prove herself despite his protection, which makes for an interesting plot in fanfiction.
A great fanfiction example could be set during a festival in the village. Hinata is excited to participate in a traditional dance, but Naruto is worried she might get hurt in the crowded area. So he stays really close to her, almost like a bodyguard. He scares off any guys who look at Hinata a bit too long. Another aspect could be in a training session where Hinata is paired with a tough opponent. Naruto is so overprotective that he tries to interfere in the training, thinking the opponent is being too rough. This causes some tension between Naruto and Hinata at first, but eventually they work it out and their relationship grows stronger.
It can strengthen their relationship. Hinata might feel loved and cared for, knowing Naruto is always there to protect her. For example, if she's in a dangerous situation and Naruto saves her, it deepens her feelings for him.
Maybe it's because Gaara sees a lot of himself in Naruto. They both had difficult pasts and were kind of loners at first. Gaara wants to protect Naruto from the pain he once endured.
One possible scenario in this fanfiction could be that Naruto's sister constantly interferes in his ninja training. She might think the training is too dangerous for him and tries to stop him from taking on challenging missions. For example, when Naruto is about to go on a mission to the Land of Waves, his sister could try to convince the Hokage not to send him, believing that he's not ready yet. This would add a whole new layer of conflict to the story, not just between Naruto and his sister, but also with the village's expectations of Naruto as a ninja.
One aspect of a 'Naruto: Overprotective Kushina' fanfiction could be exploring Kushina's overprotectiveness in Naruto's early life. Maybe she's constantly hovering, fearing for his safety due to her own past traumas. This could lead to some interesting character dynamics, like Naruto feeling smothered at times but also understanding her love.
Well, in the fanfiction world, Minato might be overprotective of fem Naruto because he lost her once. Maybe there was some kind of incident in the past where Naruto was in great danger or even 'died' briefly. This made Minato extremely paranoid about losing her again, so he goes overboard with the protection. He might also be influenced by the fact that as a female in their world, Naruto could face different and perhaps more complex challenges than if she were male, like discrimination or special treatment from certain groups.
The plot could revolve around Kushina trying to keep Naruto away from any potential harm. For example, she might not allow him to go on certain missions or even just play in dangerous areas. This would create a conflict as Naruto has his own desires to prove himself and be a normal ninja.
There are quite a few out there. In a lot of these 'Naruto overprotective sister fanfiction' stories, the sister is usually a new character created by the author. Her overprotective behavior can stem from Naruto's status as a jinchuriki or simply because she loves him dearly. For instance, she might train secretly to be strong enough to protect him. These fanfictions can offer a different perspective on Naruto's growth and the relationships he forms within the Naruto universe.
It's appealing because it adds a new family - related angle. Naruto didn't really have a strong family presence in the original, so having an overprotective sister fills that gap.