I really like 'Itachi's Unseen Love'. In this fanfic, Itachi's love for Sasuke is portrayed in a very emotional way. It shows how Itachi sacrificed so much for his younger brother. The writing is very engaging and it makes you feel the depth of their relationship.
Sure, there are likely fanfictions with this premise. Fanfiction thrives on taking established characters and putting them in unexpected situations. If Naruto were Kakashi's older brother, it would completely change the Naruto universe as we know it. It might mean that Naruto would have a different role in Kakashi's life, perhaps being more protective or having a say in his training. Also, it could impact the story arcs that involve Kakashi, as Naruto's presence as an older brother would add a whole new layer of complexity to his decisions and actions.
No. Naruto and Laxus are from two completely different anime universes, Naruto and Fairy Tail respectively. While fanfiction can play around with all sorts of wild ideas, making Naruto Laxus' older brother is not a mainstream or even a common fanfiction concept. It would require a lot of creative world - building to make such a relationship seem plausible. For example, the writer would have to explain how Naruto, with his ninja skills and chakra system, could exist in the world of magic like Fairy Tail and have a family - like connection with Laxus. But as of now, this is not a typical fanfiction scenario.
Yes, there might be such fanfictions out there. The idea of crossing over two very different anime universes like Naruto and High School DxD (where Issei is from) and creating a family - like bond between the characters is an interesting concept that fanfiction writers might explore.
There's 'The Elder Naruto'. Here, Naruto's age gives him an edge in understanding the political situation in the ninja world earlier. When dealing with Itachi, who is still involved in his complex web of secrets, Naruto can approach the situation with a more mature perspective. He can start to unravel the truth about Itachi's actions and motives much quicker than in the original storyline.
Another theme is the power of love. It's often shown that their love can overcome the differences between their clans and the past grudges. They support each other in battles and in making important decisions for the ninja world. In some fanfictions, their love is what unites different factions in the shinobi world. A good example is when they use their combined influence to stop a war that was brewing due to old clan rivalries.
I recommend " The Invincible of Koba's Magical Power " and " The Power of Naruto Shocks the World ". These two novels are about crossing the Naruto World and becoming a member of the Uchiha clan, playing the role of Uchiha Sasuke's older brother or Itachi's younger brother. The protagonist of the former couldn't stand the evil operation of the family and began to change the history of the Shinobu Realm. The latter awakened the god-level punching system because of his anger at Uchiha Weasel, and began a new journey to dominate Naruto. I hope you like my recommendation.
In many Naruto fanfictions, the ages of Naruto and Itachi can be quite flexible. Sometimes, authors might change their ages to create different story dynamics. For example, an author could make Itachi younger to explore a different version of his character development, perhaps showing him still in the early stages of his ninja training while dealing with the dark secrets of the Uchiha clan. Naruto's age might also be adjusted, like making him older to be in a more equal power dynamic with Itachi from the start.
Another teammate often included in fanfiction is Kakashi. Some fanfictions might create scenarios where Itachi and Kakashi interact during missions or even in their off - time. It could be interesting to see how their different skills and personalities clash or complement each other. For example, Kakashi's laid - back attitude contrasted with Itachi's more serious and reserved nature.
Well, for one, Kakashi's childhood might have been different. Naruto could have been there to support him after his father's death. Also, Naruto might have influenced Kakashi's attitude towards the Sharingan. He could have been more cautious about Kakashi using it, given its toll on the user.