What could be the plot differences in a fanfiction where Sasuke doesn't get 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.

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.

The curse mark could have a mind of its own. It starts to communicate with Naruto and Sasuke in their dreams, trying to manipulate them into doing its bidding. Naruto, being the optimistic one, tries to resist and turn the curse mark's power into something positive. Sasuke, however, is more tempted by the power it offers. This could lead to a rift between them as they have different approaches to dealing with the curse mark, and their relationship would be put to the test.

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 Sasuke might become more withdrawn and brooding due to the power and dark influence of the curse mark.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.

Well, it could be about Hinata struggling with the new power and the negative effects of the curse mark. Maybe she has to learn to control it to avoid being consumed by its dark side.

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 possibility could be that Sasuke is under a curse level 2 which affects his chakra flow. Sakura, being a skilled medical ninja, tries to find a cure. She has to face many challenges as the curse has some dark magic involved. Maybe she has to go on a journey to find rare herbs while also protecting Sasuke from those who want to use his cursed state for their own gain.

One type could be a fire - based curse mark. Given Sasuke's natural affinity for fire - style jutsu, a fire - based curse mark might enhance his existing abilities to an extreme level. It could make his fire jutsu more intense and uncontrollable at first. For Naruto, a wind - based curse mark could be interesting. Since he already has strong wind - style techniques, this curse mark might give him the ability to create more powerful and unique wind attacks, like a tornado - like jutsu with a dark twist.