Maybe Itachi saw Naruto as a potential force for good in the ninja world. He might have thought that giving Naruto the Sharingan would make him strong enough to protect the village and bring peace.
In the fanfiction, it could also be a way to bridge the gap between their two clans. Naruto, as someone who wants to bring peace to the ninja world, giving gifts to Itachi can be seen as an attempt to heal the old wounds between the Uchiha clan and the rest of Konoha.
The duck could symbolize peace or friendship. Maybe Naruto gives it to Itachi as a sign of truce or new - found understanding between them.
The Sharingan given to Naruto by Itachi in the fanfiction could potentially change his abilities drastically. Naruto, who was already a powerful ninja, now has an added advantage. With the Sharingan, he may be able to use genjutsu, which was not his forte before. This could make him a more well - rounded ninja. He could also use the Sharingan to analyze his enemies' chakra flow, which could help him in both one - on - one battles and in large - scale warfare. Moreover, the Sharingan might give Naruto a new level of focus and concentration, enabling him to perform his existing jutsu with more precision and power.
Well, if Naruto had the Sharigan in a fanfiction, it could completely change the power dynamics. He'd have access to powerful jutsu like Amaterasu or Tsukuyomi. This would make him even more of a force to be reckoned with against his enemies. Maybe it could also lead to some interesting interactions with Sasuke, who already has the Sharigan. It could also open up new storylines where Naruto has to learn to control this new power, and how it might affect his relationships with his friends and the Hidden Leaf Village.
Perhaps Kabuto wants to use Naruto as a pawn in his own schemes. He might think that by reviving Naruto, he can control the situation in the shinobi world to his advantage.
One reason could be to weaken Naruto. In the ninja world, being a girl might come with certain social limitations that could hold Naruto back. Another reason could be for experimentation. Madara is always interested in power and knowledge. By turning Naruto into a girl, he might be testing out some new jutsu or power - related concept. It could also be a form of psychological warfare. Madara knows Naruto has strong relationships with his friends, and this change could disrupt those relationships and cause chaos within Naruto's circle.
Perhaps Snape has a moment of softness. He sees Harry as an innocent child about to embark on a great adventure. His own past experiences with Hogwarts make him want to be part of this important moment for Harry, despite his usual cold exterior towards the boy.
One possible scenario in such a fanfic could be that Itachi, seeing Naruto's potential and his pure heart, decides to entrust Naruto with his Sharingan. This could potentially give Naruto new abilities and a deeper understanding of the Uchiha clan's power. It might also create a unique bond between Naruto and the memory of Itachi, leading to new storylines where Naruto uses the Sharingan's powers in unexpected ways.
Another storyline could involve a love triangle between a Sharigan - wielder, Kurenai, and another character. The Sharigan - user might be conflicted between his loyalty to his clan's powers and his growing feelings for Kurenai. This could create a lot of drama and internal struggle within the story.
One great Naruto Sharigan and Ino fanfiction is 'The Bond of the Sharigan and Ino's Mind'. It explores how the power of the Sharigan could interact with Ino's mind - related abilities. The story has some really cool action scenes and character development for both Naruto (with his Sharigan in this AU) and Ino.