The plot could be less centered around Sasuke's struggle with the curse mark's power and Orochimaru. Maybe there would be more focus on his normal ninja training and missions with Team 7. For example, he could be more involved in regular village protection tasks instead of being preoccupied with the curse mark.
Well, without the curse mark, Sasuke may be less driven by the dark power it represents. He might focus more on his natural talents and training. This could lead to a more positive and self - reliant Sasuke, relying on his own skills rather than the boost from the curse mark.
The curse mark can change their physical abilities. For Sasuke, it might enhance his speed and strength, but also make him more prone to losing control. Naruto, on the other hand, might develop new chakra - related powers because of his exposure to Sasuke's curse mark. For example, he could gain the ability to sense the curse mark's energy better.
In some fanfictions, the curse mark can initially drive a wedge between Naruto and Sasuke. Sasuke might become more withdrawn and brooding due to the power and dark influence of the curse mark. Naruto, on the other hand, would be worried about his friend but might not fully understand what Sasuke is going through. This could lead to some misunderstandings and arguments between them as Naruto tries to reach out while Sasuke pushes him away.
Their friends might be initially afraid of them. Since the curse mark is often associated with dark power, friends like Sakura and Kakashi could be worried that Naruto and Sasuke might lose control. This could create some distance between them as their friends are not sure how to approach them anymore.
One possible plot could be that they get the curse marks from a new, powerful enemy. They then have to figure out how to control the curse marks together without losing themselves to the dark power. Maybe they go on a journey to find a way to remove the marks while also facing challenges from other villages who see them as a threat because of the marks.
One great fanfiction could be where Sasuke's Curse Mark affects his relationship with Sakura in unexpected ways. Maybe it makes him more withdrawn and Sakura has to find new ways to reach out to him. For example, she might study more about the Curse Mark's origin to better understand what he's going through.
You can try some popular fanfic websites like Fanfiction.net or Archive of Our Own. Just search for 'Naruto Sasuke curse mark' on their search bars, and you might find some relevant fanfics.
One interesting plot could be how the curse mark affects their relationship. Maybe Sasuke's curse mark starts to make him more aggressive towards Naruto, but Naruto is determined to save him from its dark influence. This could lead to some intense battles and emotional moments between them.
In some fanfictions, the curse mark can be a source of tension. If Sasuke's curse mark makes him more aggressive or unpredictable, Sakura might be worried about him. For example, he could accidentally lash out at her during a training session. This would put a strain on their relationship as she tries to help him and he tries to keep his distance to protect her from the curse mark's influence.