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.
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 Maybe it makes him more withdrawn and Sakura has to find new ways to reach out to him.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.
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.
Well, in many fanfictions, Sasuke's curse seal form often represents a more primal and uncontrollable side of him. So, it might make his actions towards Sakura more aggressive or unpredictable. He could be less rational and more driven by the power of the curse seal, which might lead to him restraining Sakura in a way that is more forceful than his normal self would be.
There were novels similar to "I Became the Curse Mark on Sasuke"
1: The Three Kingdoms Begins with Zhang Fei, Author: Long Xiang Feng Zhu
2:"The Ming Dynasty Can't Die", Author: A Key Person
3. Yunhua Yao Ji, Author: Qi Zong
The following is a detailed introduction of these novels:
1."The Three Kingdoms Begins from Fooling Zhang Fei": Chen Su traveled to the Later Han Dynasty and became the son of Chen Deng, the leader of Xuzhou scholars.
Liu Bei was leading his troops outside, and Zhang Fei was reckless and careless. Seeing that Xuzhou was about to be stolen, what should he do?
Of course, he had to fool Zhang Fei and defend Xu Prefecture first…
2."The Great Ming cannot perish": Cross the Great Ming Dynasty and become Zhu Youjian.
In order to avoid the tragic end of Zhu Youjian, he could only work hard to make the country prosperous, develop and reform, and rejuvenate the country through science and technology!
In his hands, Da Ming absolutely could not die.
And he could not be the ruler of a subjugated country!
3.<<Yunhua Yao Ji>> I am a demon exorcist that is not very popular.
However, his ability was not weak. Just when I thought that I was going to spend my life calmly slaying demons. I lost my blade.
A demon slayer losing his blade is no different from losing his life, but I found another blade.
This saber had a human-shaped saber spirit.
The following is the story of how I brought the idiotic demon servant and the human-shaped saber spirit with facial paralysis (crossed out) around the world to eliminate demons.
Why did he have to exterminate demons? It was not a matter of national hatred. It was purely a matter of profession.
This book does not cultivate immortality.
You can read these novels on Qidian Chinese Network.
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.
Their relationship could develop as Sakura becomes more protective of Sasuke due to the curse. Sasuke, in his vulnerable state, starts to see Sakura in a new light. He realizes how much she truly cares for him.
Obviously, Sakura and Sasuke are the main characters. Sakura is the one struggling, and Sasuke is the one whose grip is part of the situation, likely due to a curse.
In this fanfiction, it could be that the 'curse' has given Sasuke some sort of power over Sakura. Sakura, being the strong - willed character she is, struggles against this new - found power dynamic. She may try to use her medical ninjutsu skills or her own chakra to counter the curse's effects while trying to free herself from Sasuke's grip, which might be strengthened by the curse.
One theme that pops up often is protection. Sakura wants to protect Sasuke from the negative effects of the Curse Mark, while Sasuke, in some stories, tries to protect Sakura from himself when the Curse Mark takes over. Also, there's the theme of growth. Through their experiences with the Curse Mark situation, both characters grow. Sasuke learns to control the mark better, and Sakura becomes stronger in her resolve to be with him.