Naruto would adapt to Itachi's life in several ways. Socially, he'd have to get used to Itachi's connections and rivalries. For instance, his relationship with Kisame would be different as Naruto. He might try to influence Kisame in a more positive way. Emotionally, he'd have to deal with Itachi's internal struggles. Itachi had a lot of guilt and secrets, and Naruto would have to either come to terms with them or find a way to resolve them. And in terms of combat, he'd practice Itachi's signature moves over and over to make sure he could use them effectively in battle.
Itachi's personality could become more outwardly friendly. In the ninja world, he had to keep many secrets and be aloof. But in the wizarding world as Harry Potter, he might find it easier to let people in. He may also be more assertive in a different way. Instead of silently following orders like in his past life, he could take the lead in situations, using his own judgment based on his past experiences and newfound magical knowledge.
Yes, there are quite a few. You can start by looking on fanfiction platforms like FanFiction.net or Archive of Our Own. Just search for 'gamer itachi reborn' and you'll find a variety of stories with different takes on the concept.
One common theme is power - up. Since he's reborn as a gamer, he often gains new and enhanced abilities that he uses to his advantage. Another is redemption, as Itachi had a complex past in the original Naruto series, and this new life gives him a chance to make things right in a different way.
A possible plot twist is that Naruto, reborn as Itachi, uses his knowledge of future events to change the Uchiha clan's fate. He could try to expose the real masterminds behind the planned Uchiha coup and prevent the massacre. This would completely change the course of the story, not just for the Uchiha but for the entire ninja world. Also, his relationship with other characters like Kakashi would be very different. Kakashi, who had a certain view of Itachi, would now be dealing with a Naruto - influenced Itachi.
One interesting plot point could be Itachi's unique ninja skills being applied in the wizarding world. For example, his Sharingan might give him an edge in certain magical duels or in detecting hidden magic. Another point could be his interaction with the existing Harry Potter characters. His calm and calculating nature might contrast with the more impulsive Gryffindors, leading to some interesting character dynamics.
In Itachi yaoi fanfiction, Itachi is often depicted as a complex and mysterious character. He is usually highly intelligent and powerful, which makes him an alluring figure in romantic or relationship - based stories. His loyalty, whether it be to his family, his village, or his love interest in the yaoi context, is also a common characteristic explored.
In fanfiction, Kagome and Itachi are often put in unique situations. Kagome, from Inuyasha, and Itachi from Naruto, have different personalities and powers. Writers might explore how their different worlds' values interact when they are paired in a story. For example, Kagome's kind - hearted and determined nature could contrast or complement Itachi's complex and self - sacrificial personality.
One interesting aspect of Naruto Rule 63 Itachi fanfiction could be exploring Itachi's character from a different gender perspective. In these fanfictions, Itachi might have different relationships with other characters. For example, his bond with Sasuke could be portrayed in a new light, perhaps with more emotional nuances due to the gender - swap. Also, the way he approaches his mission and his loyalty to the village could be re - examined through this new lens.
He would likely be adapted as a very powerful and mysterious character. His skills in the Naruto universe would translate into some sort of special magical abilities in the Harry Potter world. For example, his Sharingan could be like a super - powerful magical eye that gives him unique insights.