Another plot twist could be related to Naruto's relationship with the main Hyuga family. Since he is raised by them, he might be in the middle of the power struggle between the main and branch families. He could use his influence and unique perspective to try and bridge the gap between the two, which would be no easy feat considering the long - standing tensions. His actions could either make things better or accidentally make the situation even more volatile.
Perhaps the Hyuga clan's strict traditions and Naruto's more free - spirited nature clash. This could create internal conflicts within the clan as some members see Naruto as a threat to their way of life, while others see him as a new opportunity for the clan to grow. For example, Naruto might want to teach the younger Hyuga members some of his unorthodox ninja skills, which could be met with resistance from the more conservative elders.
Well, a really interesting plot twist could be related to Naruto's eyes. In the normal Naruto story, he has blue eyes. But if he's raised by the Hyuga, there could be some strange phenomenon with his eyes. Maybe he starts to show some Hyuga - like traits in his eyes, not exactly the Byakugan, but something in between. This could lead to him being both feared and respected in the ninja world. And also, his role in the Hyuga clan's internal politics could be a major plot point. For example, he might be used as a pawn by some and a savior by others.
In such a fanfiction, Naruto might grow up with a very different set of skills. The Hyuga are known for their Byakugan. Naruto could be trained in the use of the Byakugan from a young age, perhaps making him more of a stealthy and perceptive ninja. He may also adopt the more traditional and reserved ways of the Hyuga clan in his behavior.
Maybe Naruto would help to bridge the gap between the main and branch families of the Hyuga clan. He has always been about unity and friendship. He could use his influence to try and create more equality within the clan. This might involve standing up against the old traditions that have been causing some division, like the cursed seal on the branch family members.
Well, it could be that Naruto's relationship with the other Konoha ninjas changes drastically. They might see him as an outcast because of his association with Kisame. On the other hand, Naruto might try to bridge the gap between Konoha and the Akatsuki due to his upbringing by Kisame. This would create a whole new set of conflicts and alliances within the Naruto universe.
One possible plot twist could be that Naruto develops a much darker and more ruthless side due to Zabuza's influence. Instead of the optimistic and friendly Naruto we know, he might be more solitary and calculating in his approach to battles and relationships. For example, he could be more willing to use underhanded tactics like Zabuza's use of hidden mist jutsu to ambush opponents.
One possible plot twist could be that Naruto inherits Hashirama's unique Wood Style jutsu much earlier and in a more powerful form. Since Hashirama was a master of this powerful ability, he might train Naruto intensively in it. This would make Naruto stand out even more in the ninja world and perhaps change the way his peers and enemies view him.
One possible plot twist could be that Naruto gains unique fire - related powers from the phoenix. Since the phoenix is often associated with fire in many mythologies, Naruto might be able to control a different kind of fire jutsu, which would set him apart from his normal abilities in the original Naruto story.
Perhaps Naruto's relationship with the other ninja in Konoha is affected. Since Yoruichi has a different set of values and skills compared to the traditional Konoha ninja, Naruto could be seen as an outlier. This could lead to some initial misunderstandings and later, a new form of respect from his peers as they see the effectiveness of his unique upbringing.
His training would likely focus more on precision and chakra control from an early age. The Hyuga are known for their precise strikes and efficient use of chakra in the Gentle Fist style. So Naruto would probably be doing a lot of target practice and chakra - regulation exercises, which is different from the more brute - force - oriented training he had in the original series.
One possible plot change could be in Naruto's fighting style. Instead of relying on the Shadow Clone Jutsu mainly, he might incorporate Aburame clan techniques like using bugs for reconnaissance and attack. For example, he could send bugs into an enemy's hideout to gather information before a mission.