In the fanfic, Naruto stealing the wrong scroll would surely affect him directly. He might be in danger of getting expelled from the village or losing his ninja status. His teacher, Iruka, would also be affected. Iruka has always been looking out for Naruto, and this incident would put Iruka in a difficult position. He might have to defend Naruto in front of the higher - ups or face the disappointment of seeing Naruto make such a big mistake. Additionally, the other ninja clans in the village might start to question the security measures in place if Naruto can so easily steal the wrong scroll.
Perhaps the scroll has a connection to the Sage of Six Paths. Since many important things in the Naruto story are related to the Sage, it could be that the scroll contains some of his teachings or prophecies. Naruto, being the protagonist, might be the one destined to uncover and fulfill whatever is written in the scroll.
Well, in 'naruto a different scroll fanfiction', perhaps the scroll contains secrets about a forgotten jutsu. Naruto could discover this scroll during one of his missions, and it could lead him on a journey to master this new jutsu. Maybe it's a jutsu that has the power to change the balance of power in the ninja world, and Naruto has to face many challenges and enemies who also want to get their hands on this scroll.
Jiraiya could be a crucial ally. As Naruto's mentor, he would be interested in the knowledge of the Forbidden Scroll. He could guide Naruto on how to use the knowledge safely and also protect Naruto from those who would try to take the scroll from him.
It could lead to some really interesting plot twists. Naruto's new ability as a seal master might give him an edge in battles and change the dynamics of his relationships with other characters.
Neji might gain a significant boost in power. Without the seal suppressing him, his chakra flow could become more natural and stronger. He could potentially unlock new abilities or improve his existing ones, like his Gentle Fist technique becoming even more potent.
In many fanfictions, Naruto might use his unique chakra, perhaps enhanced by his Uzumaki heritage or the Nine - Tails' power. His strong will and connection to his friends could also play a role, allowing him to find a way to break the seal through sheer determination and his belief in Neji's potential.
It could also lead to him being targeted by enemies. If word gets out that he has access to the Forbidden Scroll's secrets, villains might come after him to either steal the knowledge from him or stop him from using it. This would put him in a lot of dangerous situations and force him to grow up quickly in order to protect himself and the village.
Most likely Naruto would be one of the main characters, since it's in the title. There might also be his friends like Sasuke and Sakura as they are often involved in Naruto's storylines in fanfictions.
Well, I think Hinata would also be there to support Naruto. She's always been by his side and her Byakugan might be useful in detecting any strange changes in Naruto's body or chakra after breaking the seal. Also, Tsunade could play a role. As the Hokage, she has resources and knowledge. She could provide Naruto with protection if there are enemies targeting him because of the broken seal and also offer advice on how to handle the situation.