In some fanfictions, Sasuke might be a jerk to Sakura because of his brooding and solitary nature. He has his own goals and demons to fight, and sometimes he may push Sakura away as he doesn't want to involve her in his dangerous world or be distracted from his revenge. Also, his pride and the sense of superiority he has developed over the years could make him act coldly towards her.
It could be due to a misunderstanding. Fanfic writers often play with the idea of miscommunication. Suppose there was a rumor that Sasuke was involved with someone else in a not - so - nice way. Sakura, believing it, might start ignoring him out of pride and hurt feelings.
Another reason could be to deviate from the original story's narrative. In the original, they have a lot of attention in different ways. By making them neglected, it creates a whole new set of plot possibilities. For example, they might form different alliances or develop new skills out of necessity.
There are Sasuke - obsessed - with - Sakura fanfictions because the two characters are both very popular. Sasuke is a complex and brooding character, and Sakura is a strong - willed female character. Combining their relationship in a way where Sasuke is obsessed creates a lot of interesting storylines. It can explore themes of love, loyalty, and how far one would go for the person they are obsessed with. It also allows fans to play with different scenarios and character traits that may not have been fully explored in the original series.
It could also be to add more depth to their relationship. When they are neglected, they have to rely on each other more. For example, in a fanfiction where the village turns their backs on them, Naruto and Sasuke might form an even stronger bond as they face this together. This gives writers a chance to develop their friendship in new and interesting ways. Also, it can be a way to introduce new plotlines and conflicts that wouldn't exist in the original story. By changing their status from being in the center of attention to being neglected, new challenges and opportunities for character growth are created.
In some fanfictions, Naruto might avoid Sasuke because of a misunderstanding. For example, if there is a false rumor spread about Sasuke being involved in something bad, Naruto could be misled and keep his distance.
It's popular because fans like to see a different dynamic between the two characters. Usually, their relationship is very competitive, and in 'naruto dominates sasuke fanfiction', it gives Naruto the upper hand which is a fresh take.
Sasuke might kidnap Naruto because he wants to prove his superiority. By taking Naruto captive, he can show that he is stronger and more in control. It could be a power play, where Sasuke is trying to assert his dominance over Naruto once and for all.
It could be for Sasuke's own good. Kakashi might think that by hurting Sasuke physically in a controlled way, like in a very tough training, he can make Sasuke stronger and more resilient. He could be trying to prepare Sasuke for the harsh realities of the ninja world.
People like these fanfictions because it gives a chance to see a more nurturing side of Naruto. He was always determined to bring Sasuke back in the original, and in these fanfictions, he gets to actually shape Sasuke's growth in a more direct way. It also shows how their bond could be even stronger if Naruto had this kind of role.