The fanfiction could start with Harry suddenly finding herself in the Naruto world as Naruto's sister. She would have to adapt to a completely different culture and way of life. As Naruto's sister, she would be part of the Uzumaki clan, which has its own history and secrets. She could potentially unlock some long - forgotten Uzumaki powers using her knowledge of magic and different ways of thinking. Her relationship with Naruto would be a central part of the story, with them supporting each other through various challenges in the shinobi world.
Well, in this fanfiction, Harry as Naruto's sister could bring a whole new dynamic. Since Harry has a strong sense of justice from his own story, she would likely encourage Naruto to pursue his dreams of becoming Hokage even more fervently. Also, she might befriend Sasuke early on, using her understanding of lonely and troubled souls from her own past. And her presence could change the way some of the village elders view Naruto, as they might see her as a potential asset to the village.
Well, the plot could involve her adapting to the ninja world. Maybe she'd bring some of her magic knowledge from the Harry Potter universe, like using spells in a new way to mimic ninja techniques. She could also have a special bond with Naruto, being his sister, and help him in his journey to become Hokage, like using her intelligence to outwit enemies.
One possible scenario in this fanfiction could be that Harry, with his magical abilities, enters the Naruto universe and is reborn as Naruto's older sister. He could use his magic in unique ways within the ninja world, perhaps using spells to enhance his ninja skills or to protect Naruto from early on. This would bring a whole new dynamic to the Naruto story as the presence of someone with such different powers and a different upbringing would change the way Naruto grows and faces challenges.
A really interesting plot point could be how Harry, now as Naruto's sister, deals with the Nine - Tailed Fox within Naruto. With his knowledge of dealing with dark forces in his own world, he might approach it in a different way than the ninja in the Naruto world. Maybe he tries to communicate with the fox using some form of magic - influenced telepathy.
Her spell - casting skills could be translated into unique jutsu - like abilities. For example, the levitation charm could be used to quickly move objects or even herself in battle, similar to a ninja's teleportation jutsu but with a different mechanic. Her knowledge of potions could also be useful. She might be able to create elixirs that can enhance a ninja's strength or speed, much like the chakra - enhancing pills in the Naruto world but with different ingredients and methods.
The plot could start with Erza being mysteriously transported to the Naruto universe or vice versa. They would initially be unaware of their relation. As they interact, they might notice some similarities in their personalities or abilities. Eventually, they discover they are siblings. Then they would team up to fight against powerful villains threatening both their worlds. Maybe there's a dark force that wants to use their combined power for evil, and they have to resist it together.
One possible plot could be that Tsunade, due to some powerful and complex jutsu gone wrong, is magically bound to Naruto and has to follow his commands. Naruto, being the kind - hearted person he is, would be very conflicted. He might initially be shocked and try to find a way to reverse the situation. He could use Tsunade's skills and knowledge for the betterment of the village in a very respectful way, like asking her to train more medical ninjas or improve the village's defenses while still treating her as an equal in spirit.
In such a fanfiction, perhaps the plot could involve Ashoka being magically transported to the Naruto universe and through some strange circumstances, forced into a position of servitude to Naruto. Maybe she initially resists but then starts to see Naruto's good heart and noble intentions, and over time, their relationship evolves from master - slave to something more like friends.
In a 'Harry becomes Sauron' fanfiction, it might start with Harry being disillusioned with the wizarding world. He discovers some ancient magic that has a connection to Sauron's power. As he delves deeper, he becomes influenced by Sauron's will. He could then try to reshape the wizarding world in his image, which is now a dark and tyrannical one. He might even try to bring Middle - earth and the wizarding world together under his rule.
She could become more confident in her new identity. Starting as Harry from a different world, she'd have to adapt to being a ninja and Naruto's sister. This new role would force her to step out of her comfort zone and grow. For example, she might have to learn physical combat skills which she didn't rely on as much in the wizarding world.
In this kind of fanfiction, Naruto might teach his students his unique ninja way. He could pass on his never - give - up attitude. For example, he might train students who are having trouble with their chakra control, just like he once did. He'd also share his experiences about facing strong enemies like Pain and Sasuke.