Maybe Natasha, in this fanfic, could be working undercover among Naruto's group for some secret mission. She gains Naruto's trust over time, but then reveals her true motives which are against Naruto's goals, thus betraying him.
In a 'naruto gets betrayed by natasha fanfic', it could start with Natasha arriving in the Naruto universe. She seems to be an ally, helping Naruto in his battles and training. But as the story progresses, it could be revealed that she has her own agenda. She might steal some important ninja technique or valuable item from Naruto's village and frame Naruto for it. This would lead to Naruto being shunned by his own people and having to prove his innocence while also dealing with the pain of Natasha's betrayal.
Well, the idea of a 'naruto gets betrayed by natasha fanfic' is quite an interesting crossover concept. Since Naruto is from the Naruto anime/manga world and Natasha is from the Marvel universe. It's possible that such a fanfic might be exploring the idea of how Naruto, who is used to his own set of values and relationships in his world, would react to being betrayed by Natasha. However, as I said before, actually finding it would require some in - depth searching on the appropriate fanfic platforms and communities.
In such a fanfic, the plot might start with Naruto's friends gradually turning against him due to false rumors spread by a hidden enemy. They could start to exclude him from missions and isolate him within the village. For example, Sasuke might believe the lies and challenge Naruto, thinking he has changed for the worse. This would lead to a series of battles where Naruto has to fight not only his former friends but also his own feelings of betrayal and confusion.
In the fanfiction, it might be that Tsunade believes Naruto has become too dangerous. Maybe she's misled by false information about Naruto's new powers being uncontrollable and a threat to the village. So she decides to betray him to protect Konoha from a potential disaster.
In 'naruto is betrayed in wave fanfic', it could be that Naruto is betrayed because of false accusations. People might believe that he's working with the enemy. His friends in the Wave mission, like Sasuke or Sakura, could turn their backs on him. They might not trust him anymore and even try to stop him from achieving his goals in the mission.
In the '4 kunoichi gets betrayed fanfic', it could be that the four kunoichi are working for a noble cause. However, one of their own, due to jealousy of the attention the others get, decides to betray them. She spreads false rumors about them, making the whole ninja community turn against them. The four kunoichi have to prove their innocence and also figure out a way to deal with the traitor within their group.
Another plot could involve jealousy. If Sakura becomes jealous of Naruto's growing popularity and power among the villagers, she might betray him. She could spread false rumors about him, which would lead to the villagers turning against Naruto.
One possible plot could be that Naruto discovers his friends have been secretly working with an enemy. They might have been promised power or something valuable in return for betraying Naruto. Maybe they spread false rumors about Naruto, turning the village against him.
It could also be a misunderstanding. Hinata might be under some sort of mind - control or false impression. For example, an illusion is cast on her that makes her believe Naruto has become evil. As a result, she takes actions against him that he perceives as betrayal. In this case, once the truth is discovered, they would likely reconcile.
Maybe the gods are jealous of Naruto's ability to inspire people. In this fanfic, they could use their divine powers to make it seem like Naruto has committed heinous crimes. His village would turn on him, and he'd be on the run. Along the way, he might discover some ancient power that can counter the gods' treachery and use it to clear his name and get revenge on those who wronged him.
One possible plot could be that Tsunade is misled by false information about Naruto. Maybe some powerful enemy fabricates evidence that Naruto is a threat to the village. Tsunade, believing this, exiles Naruto. Naruto, feeling betrayed, then has to prove his innocence while also facing external threats.