I'm not sure. Fanfiction can be very subjective. Some might find it interesting as it offers a different take on the characters' relationship, but it also goes against the more common portrayal of their bond in the original series.
One reason could be that in some fanfiction, the characterizations of Sasuke and Sakura might be off. Maybe Sasuke is portrayed as overly cruel to Sakura in a way that doesn't seem true to his character in the original series. Another reason could be that the storylines in these fanfictions are too clichéd, like always having Sasuke constantly reject Sakura in the same uninteresting ways.
In lemon fanfiction, the 'sakura hates sasuke' scenario can stem from various factors. One possibility is that Sasuke's past actions, such as his association with dark forces or his disregard for the safety of the village which Sakura holds dear, could make her resent him. Additionally, if in the fanfiction's world, Sasuke has made decisions that directly oppose Sakura's efforts to build a relationship or a peaceful environment, it would be understandable for her to hate him. For instance, if he undermines her medical work in the village or her attempts to bring the shinobi world together.
One common scenario is when Sasuke betrays the village. Sakura, who is loyal to the village, may then feel hatred towards him. She has grown up in the village and values its safety and well - being, so Sasuke's betrayal would be a major blow to her and could turn her love into hate.
One possible reason could be jealousy. Maybe in the fanfiction, Naruto feels overshadowed by Sasuke in Sakura's eyes, which leads to his hatred. Another reason might be that he perceives their relationship as a threat to his own bonds with them. For example, he could think that Sasuke and Sakura's closeness excludes him in some way.
It can create a lot of tension. For example, it might lead to some intense confrontations between them. Their interactions would no longer be friendly or loving but full of anger and resentment.
Maybe in the fanfic, Sasuke has done something to betray Sakura's trust. For example, he might have left the village again without considering her feelings.
A scenario could be that Sasuke blames Sakura for something that went wrong in his revenge plan. Maybe she unknowingly did something that set him back, and in his anger and single - minded focus on revenge, he starts to hate her. Another possibility is that in the fanfic world, there is a misunderstanding. Sakura is misinterpreted as being involved with someone who has wronged Sasuke, and this causes him to hate her without really knowing the truth.
Well, these types of fanfictions can create a one - sided view. The original Naruto series shows a multi - faceted relationship between Sasuke and Sakura. However, the 'sasuke hates sakura fanfiction' might overemphasize the negative side. This can cause fans to have a skewed view of the characters' personalities and the overall story. They might not see the subtleties in Sasuke's behavior towards Sakura in the original, like the times he showed a glimmer of care despite his aloofness.