One common plot twist could be Naruto being influenced by a dark power. For example, he might encounter an ancient evil entity that corrupts his mind, leading him to turn against his friends and the village. Another could be a betrayal within the village that makes Naruto lose faith in his values and start to embrace a more self - serving and ruthless attitude.
Well, in some 'Naruto corrupted by fem Kyuubi' fanfiction, a great plot twist could be that the fem Kyuubi is actually a part of a larger prophecy that Naruto was unaware of. The corruption she brings is a necessary step in fulfilling this prophecy. It could also be that the fem Kyuubi's true form is not what it seems, and when Naruto discovers this, it completely changes his perception of her and their relationship. For instance, she might be a reincarnation of an ancient and powerful being, and her 'corruption' of Naruto is a way to awaken his latent powers related to that ancient being.
One common plot twist could be Naruto discovers a hidden healing jutsu that has a dark side. For example, it might drain his life force while healing others at an extraordinary rate. Another could be that he's forced to choose between using his medic nin skills to save a friend or use them to stop a powerful enemy, as using the skills in one way would make it impossible to do the other. And sometimes, he might find out that his medic nin abilities are linked to an ancient prophecy that no one expected.
Another is the discovery of a dark secret about his family or the village. Maybe he finds out that the village leaders had some malicious intentions towards his family all along. This realization could be too much for him to handle and make him lose his sanity.
A plot twist could be that the characters from Naruto are reincarnations of Egyptian gods. So, Sasuke could be the reincarnation of a war - like god, and his rivalry with Naruto takes on a whole new dimension as they are unknowingly following the patterns of their godly pasts. Also, the Akatsuki might be in league with a dark Egyptian force, and Naruto has to expose this and stop their evil plans.
One possible plot twist could be that Naruto, after becoming a Madara fan, starts to question the traditional values of Konoha. He might see Madara's vision of a more unified world under his rule as something appealing. This could lead to a rift between him and his friends as they struggle to understand his new perspective.
One possible plot twist could be that Naruto, after learning more about Itachi's sacrifices for the village, starts to idolize him in a way that changes his own ninja path. He might adopt some of Itachi's stealthy and strategic techniques. For example, he could focus more on gathering intelligence before acting, rather than his usual head - on approach.
Maybe in this fanfiction, Naruto is exposed to a powerful dark jutsu that slowly corrupts his mind. As he becomes insane, he begins to abandon the values he once held dear. He could start using his powers for self - gain rather than for the protection of the village, like taking over control of Konoha in a tyrannical way.
One possible plot twist could be that Naruto's transformation into wrath is triggered by the loss of a dear friend. This could lead him to abandon his usual beliefs and go on a vengeful rampage against the enemy. Maybe he starts to use darker forms of his jutsu without regard for the consequences.
One possible plot twist could be that Naruto, as a fox kit, discovers he has unique powers related to his new form that are different from his normal ninja abilities. For example, he might be able to communicate with all fox - related spirits or creatures in the Naruto world. Another plot twist could be that the other characters don't recognize him at first, leading to some really interesting and comical situations. Maybe Sasuke tries to attack him thinking he's a wild fox, but then realizes something is off about this 'normal' fox.
In many 'Naruto Almost Dies' fanfictions, one plot twist could be that an unexpected ally turns out to be the one endangering Naruto. For example, a character who was thought to be on Naruto's side has been secretly working for an enemy organization all along. Another plot twist might be that Naruto's own powers backfire on him. His Nine - Tails chakra, which is usually his strength, could suddenly become uncontrollable and start to harm him instead of protecting him. And sometimes, a character from Naruto's past that was forgotten or thought to be dead resurfaces and is the cause of his near - death situation.