Perhaps Naruto, as a knight, has to face off against his former ninja comrades who now see him as a threat to the ninja world. They believe his new knightly ways go against the ninja code, creating a conflict between loyalty and his new identity.
A really interesting plot twist could be that the land of knights has a prophecy about a foreigner coming to save them, and they initially mistake Naruto for this hero. But as he tries to fulfill this role, he realizes that the real threat to the land of knights is intertwined with his own ninja world's problems, forcing him to find a way to bridge the two worlds.
Well, one plot twist could be that Naruto discovers a hidden ancient power during his banishment. Maybe he finds a long - forgotten jutsu in a desolate place. Another could be that he forms unexpected alliances with former enemies who now see his banishment as unjust. For example, some of the minor villain clans might join him, seeing a chance to overthrow the existing power structure in the shinobi world.
In this fanfiction, a possible plot twist is that Naruto's transformation into a Jashinist causes a rift in the ninja world. Some villages see him as a threat and form alliances against him. However, Naruto, using his unique perspective as a former Leaf ninja turned Jashinist, tries to bridge the gap between different ninja factions. He might also discover that Jashinism has a connection to an ancient prophecy that only he can fulfill, which changes how everyone views him and his new beliefs.
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.
Well, it could be that Naruto, as a knight, goes on a quest to protect the Hidden Leaf Village which is now a medieval - style kingdom. He might use his ninja skills, which are now seen as knightly abilities, to fight off bandits or rival kingdoms that threaten his homeland.
One possible plot could be that Naruto, through some dark magic or a curse, is transformed into a Death Knight. He might initially struggle with his new form and the evil tendencies that come with it. But, being Naruto, he tries to use his new powers for good. For example, he could use the Death Knight's necromantic abilities to protect the Hidden Leaf in a new way, like raising undead minions to fight off invaders while trying to find a way to reverse his transformation.
One possible plot twist could be that Naruto's new fallen angel powers make him an outcast in Konoha. His friends might be afraid of him at first. For example, Sasuke could see him as a threat to his own power. Another twist could be that Naruto has to fight against a dark force that is trying to control his fallen angel powers for evil purposes. He would have to struggle to keep his good nature while having these new, potentially dangerous powers.
One possible plot twist could be that Naruto's new form as a tailed beast gives him the ability to communicate with all the tailed beasts simultaneously. This could lead to him uniting them in a way that no one has ever seen before, and they might work together to bring about a new era of peace in the ninja world.
One idea could be that Naruto is forced to become a hunter nin after a rogue ninja from another village steals a powerful Konoha jutsu. He has to track the ninja down, using his unique skills like the Shadow Clone Jutsu for surveillance. Along the way, he discovers new chakra abilities that are specific to the hunter nin role.