I think it would be a wild encounter. Itachi might be shocked or annoyed by Naruto's behavior, and that could set off a series of events that change the dynamics of the story. Maybe it would even force both characters to grow in unexpected ways.
Well, in a fanfiction where Naruto replaces Itachi, the whole power dynamic in the story would shift. Naruto has his own set of powers and abilities like the Nine - Tails chakra. This would change how battles are fought. In Itachi's place, Naruto might be more open about his intentions and not keep so many secrets. He could inspire the Uchiha clan in a different way, perhaps leading them towards a more positive path rather than the path of revenge and secrecy that Itachi's actions led to.
Well, Naruto might be shocked at first. He'd probably notice the resemblance to Itachi right away. And then he'd start thinking about his own relationship with Itachi.
One possibility is that Sarada, being a young and inquisitive ninja, would be in awe of Itachi's skills and reputation. She might ask him for advice on becoming a better ninja. Itachi, in his calm and wise way, could offer some insights on the importance of self - control and protecting the village at all costs.
Itachi would probably be very calm and composed. He might see Sarada as a symbol of the new generation of ninjas in the village. He could be gentle with her, perhaps sensing her potential and her desire to grow as a ninja.
Well, in a fanfiction where Naruto is trained by Itachi in Sharingan, Naruto would first have to adapt to the new power. Itachi would probably start with the basics of how to activate and control the Sharingan. Since Naruto is used to his own physical and chakra - based training, this would be a challenge. However, with Itachi's guidance, he could master it. Once he does, he could use the Sharingan to analyze his opponents' fighting styles better. For example, he could quickly figure out the weaknesses in an enemy's jutsu and counter them effectively. He could also use the Sharingan's visual prowess to enhance his reaction time during battles.
If Naruto meets a genie in fanfiction, he might wish for power to protect his village better. For example, he could wish for a new jutsu that can defeat any enemy without harming his friends. This would make him even more of a hero in Konoha.
Well, it could be really exciting. Naruto's ninja skills like his shadow clones and rasengan could be quite a shock to the Avengers. He might be initially confused by all the high - tech stuff they have. Maybe he'd try to make friends with Thor first since they both have some sort of 'power of nature' thing going on. And the Avengers would be intrigued by Naruto's chakra system. They'd probably want to study it to see if it could help them in some way.
In a scenario where Trunks meets Naruto, their meeting would likely be a clash of two very different cultures. Trunks is used to a world where fighting is often about protecting the Earth from powerful alien threats. Naruto is focused on protecting his village and the ninja world. However, they both have a strong sense of justice. So, they might team up to take on a common enemy that threatens both their worlds, using their unique powers and skills to defeat the foe.
Well, Itachi could teach Korra some stealth and perception techniques. Since he's from a world where ninja skills are crucial, he might show her how to better sense danger. Korra could in return introduce Itachi to the concept of bending and how it can be used not just for combat but also for building and healing. They might also have philosophical discussions. Itachi, with his complex past and views on sacrifice, could share his thoughts with Korra, who is often dealing with moral and ethical decisions in her role as the Avatar.
Well, perhaps Sarada could be initially in awe of Itachi. She might learn some unique jutsu techniques from him in the fanfiction. It could also be a scenario where Itachi gives her some sage advice on how to handle her own powers and responsibilities within the Uchiha clan.