Godlike taijutsu in Naruto fanfiction can also be a unique selling point for a story. Writers may create original characters with such skills to add an interesting element to the plot. These characters could have trained in secret or have some special heritage that gives them such incredible taijutsu abilities. It can lead to exciting fight scenes where the power dynamics are constantly shifting.
Some fanfictions also give Naruto himself godlike taijutsu abilities. While he is known for his Rasengan and other jutsu, in these stories, he might have spent extra time training his physical combat skills. This could be due to a special training arc where he meets a master who teaches him ancient taijutsu forms that were long forgotten. This would add a new dimension to his character, making him even more of a force to be reckoned with in both long - range and close - range battles.
In his fanfiction - created taijutsu, Naruto might also incorporate his experience with the Nine - Tails' chakra. He could develop a form of taijutsu that allows him to momentarily access the Nine - Tails' strength during combat. This could result in him having enhanced speed and power in his strikes, as well as the ability to recover quickly from attacks due to the Nine - Tails' regenerative abilities.
There are quite a few. One example is 'The Taijutsu Masters of Konoha' where Naruto and a few others focus solely on perfecting their hand-to-hand combat skills.
His new taijutsu could change the balance of power in battles. If it's a very powerful form of taijutsu, it could give his village an edge in conflicts. Enemies would have to find new ways to counter his moves, which might lead to a shift in military strategies across the ninja world.
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.
A possible relationship could be one of mutual respect. Sarada would respect Itachi for his skills and his past sacrifices. Itachi, on the other hand, might see Sarada as a symbol of hope for the future of the Uchiha clan. They could share stories about the Uchiha, with Itachi passing on the history and traditions that Sarada might not be fully aware of. This could strengthen their bond and lead to a deeper understanding between them. In the fanfiction, they might also team up to face a common enemy, relying on each other's strengths and abilities, which would further solidify their relationship.