Another theme is unrequited friendship. Naruto sees Sasuke as his closest friend, but Sasuke's actions sometimes make Naruto feel like that friendship is not mutual, leading to hurt feelings. It's often about Naruto's struggle to hold on to that friendship in the face of Sasuke's coldness.
It could also be due to a power struggle. Fem Sasuke might be jealous of Naruto's growing power and influence. In some fanfictions, characters can be driven by envy, and she might see Naruto as a rival that needs to be put in her place, so she ends up hurting him.
Naruto might initially be shocked. Given his friendly nature towards Sasuke in the original story, he wouldn't expect such an attack from her. So, his first reaction could be pure disbelief.
It could cause a temporary break in their friendship. Naruto might be angry at Sasuke for being so careless. Sasuke would be desperate to fix things. This accident could also make Sasuke more determined to master his abilities so that he never endangers Naruto again. And Naruto, seeing Sasuke's remorse, might start to see a more vulnerable side of him, which could strengthen their bond in the long run.
Well, 'Pain of the Promise' is a fanfiction in this category. Here, Sasuke breaks a significant promise to Naruto which hurts him badly. It delves into Naruto's inner turmoil as he copes with this new reality and how it affects their relationship.
Well, sometimes in fanfiction, Naruto might hurt Sasuke to create drama. Writers like to explore complex relationships and conflict is a great way to do that. It could also be to show the intensity of their bond, as if only someone you're really close to can truly hurt you.
One reason is the complex nature of their relationship. Their friendship - turned - rivalry in the original series has a lot of depth. Writers like to explore the darker aspects of it, like how Sasuke's actions could hurt Naruto. It adds drama and emotional turmoil to the story.
Well, 'Darkening Hearts' is a 'Sasuke hurts Naruto' fanfiction. It presents a situation where Sasuke, influenced by certain dark forces, ends up hurting Naruto both physically and emotionally. The story is really good at portraying the impact of Sasuke's actions on Naruto's mental state and how he tries to cope with the pain.
Perhaps they are in a dangerous situation where they are being chased by powerful enemies. Sasuke decides to make a risky move to protect Naruto but misjudges his own strength. His attack aimed at the enemies accidentally grazes Naruto. This would create a lot of tension between them, with Sasuke blaming himself and Naruto trying to ease his guilt.
One possible 'naruto hurts sasuke fanfic' could be about a time when Naruto accidentally uses too much force during a sparring session and Sasuke gets a minor injury. Naruto then feels extremely guilty and tries to make it up to Sasuke by doing all his chores for a week.