Well, one possibility could be that Naruto uses his ninja skills to protect Mikoto and Hitomi from some common enemy in the Naruto universe, like rogue ninjas. Maybe they are on a mission together and Naruto's strength and quick thinking come in handy to keep them safe.
In this fanfiction, perhaps Naruto helps Mikoto and Hitomi in a more personal way. For example, Mikoto and Hitomi are having trouble with some family or village - related issues. Naruto, with his own experiences of being an outcast and then finding his place, can offer them advice and support. He could use his influence in the village to help them solve their problems.
It could be that there is a special event or competition in the village. Mikoto and Hitomi are participants but face some difficulties. Naruto, being the hero he is, steps in to help them train. He shares his unique techniques and training methods. Along the way, they also become good friends and learn a lot from each other, which in turn helps them perform better in the event.
Obviously, Naruto is one of the main characters as the title indicates he is the one helping. Mikoto and Hitomi are also main characters. Mikoto might be a character with her own set of skills and a backstory that makes her need Naruto's help. Hitomi could be in a similar situation, perhaps a bit more vulnerable or in a difficult position that only Naruto can assist her out of.
One possible plot could be that Mikoto, perhaps having some special skills or knowledge, teams up with Naruto in a mission within the fanfiction world. They might face a powerful enemy together, and Mikoto uses her unique abilities to complement Naruto's. For example, if Mikoto has some sort of elemental control, she could combine it with Naruto's Rasengan to create a new and more powerful attack.
The plot could revolve around Naruto learning about the Uchiha's history from Mikoto. Since she has a deep understanding of the clan. He might discover secrets that could help him in his journey to become Hokage. And Naruto could also be a positive influence on Sasuke, who might be less brooding with Naruto around. Mikoto would be like a mother figure to Naruto, guiding him in his studies and ninja training.
In this fanfiction, it could be that Mikoto's connection to the Nine - Tails is explored. Maybe she has some sort of special ability that allows her to sense the Nine - Tails' chakra within baby Naruto. She then tries to help Naruto control this power from a young age. She might introduce him to some spiritual practices or chakra - control methods that are unique to the Uchiha or something she has discovered on her own. This would completely change Naruto's journey as he grows up with better control over the Nine - Tails' power.
Perhaps in the fanfiction, Naruto is in a vulnerable state, like he's lost his powers temporarily. Mikoto, having a soft spot for him, takes it upon herself to be his guardian. She has to face not only physical threats from Naruto's enemies but also deal with the political situation in the ninja world that might put Naruto at risk. She uses her influence as an Uchiha to shield Naruto from all these dangers.
Well, it could be about Naruto being hypnotized by Mikoto into believing he has certain powers or a different identity. Maybe she hypnotizes him to help him overcome some fears or traumas.
One possible plot could be that Naruto, with his unwavering belief in redemption, tries to reach out to Madara. He might use his own experiences of being an outcast and finding a place in the world. Naruto could show Madara the positive changes in the ninja world that he fought so hard to destroy. For example, he could introduce Madara to the new peaceful co - existence among the villages.
Well, one possible plot could be that Naruto uses his shadow clone jutsu to create multiple clones to help Aang with his airbending training. Naruto's clones can act as moving targets or opponents for Aang to practice his dodging and offensive airbending skills on.
A great plot could be that Naruto discovers a hidden scroll that was once in the possession of both Kushina and Mikoto. This scroll contains a prophecy about a great threat to the ninja world that only the combined powers of the Uzumaki and Uchiha clans can defeat. Naruto then has to convince Kushina and Mikoto to work with him to decipher the scroll and prepare for the upcoming danger.
Well, one possibility could be that Naruto has a very different upbringing. Since Mikoto is an Uchiha, Naruto might grow up with a deeper understanding of the Uchiha clan's ways. He could be trained in Uchiha techniques from a young age. Maybe he would have a natural affinity for fire - style jutsu. And he might also face different challenges related to the Uchiha's history and the events that led to their downfall. His relationships with other characters like Sasuke would be very different too. Instead of being rivals in the same way, they could be more like cousins with a shared family heritage to protect.