Well, it could be that Naruto, under Hiruko's influence, might develop a very different set of skills. Maybe he'd be more attuned to darker jutsus. He could also have a more cynical view of the ninja world.
The story might start with Hiruko finding Naruto in some way, perhaps seeing potential in him that others don't. As Naruto is raised by Hiruko, he could be exposed to Hiruko's goals and motives. This might cause Naruto to question the values of the Hidden Leaf village. He could also form different relationships compared to the original story. For example, his bond with Sasuke might be affected as he has a different upbringing. And his relationship with the Hokage might be one of suspicion rather than respect.
In a 'naruto rasied by hiruko fanfiction', perhaps Naruto would grow up with a sense of isolation from the rest of the village. Hiruko might train him in secretive and unorthodox ways that set him apart from the normal ninja training. This could lead to Naruto having to constantly hide his true abilities from his peers.
He would probably be more powerful in different ways. Hiruko might teach him unique and dangerous techniques that change his fighting style. Also, his personality would be shaped by Hiruko's teachings. Maybe he'd be more calculating and less impulsive. Instead of charging into battles head - first, he'd think more strategically like Hiruko. His sense of justice might also be warped. What he considers right and wrong could be different from the original Naruto who was influenced by the values of the Hidden Leaf.
Well, it might involve Harry Potter growing up in a really dark and dangerous environment like Tartarus. Maybe he'd learn some very different magic or survival skills compared to what he learned in Hogwarts. He could also face different kinds of enemies, perhaps more menacing and otherworldly ones.
The plot could be about Naruto suddenly discovering he has Diclonius powers. He might have to hide it at first because people in the Hidden Leaf Village would be afraid of his new abilities. Then, he could start training to control his Diclonius powers, like his vectors, while still dealing with the regular threats in the Naruto world, like Akatsuki.
Perhaps there's a prophecy that Naruto and Chichi together can stop an impending doom. But they come from different worlds and cultures. Naruto has to convince Chichi to believe in the prophecy and join him. Along their journey, they learn about each other's worlds, like Naruto shows Chichi his ninja village and its unique customs, and Chichi teaches Naruto about her family traditions. Their relationship grows as they work towards fulfilling the prophecy.
Well, one possibility could be that Naruto has some unique abilities inherited from Hermes. Maybe he has super speed like Hermes, which would completely change the way battles play out in the Naruto universe. He could use this speed to outmaneuver his opponents in a fight, and it would be a new and exciting addition to his existing skills.
If Naruto was adopted by Kyuubi in fanfiction, it could lead to a completely different Naruto. He might be more confident earlier on. Since Kyuubi is a very powerful being, Naruto could be trained in unique ways. For example, he could learn how to harness Kyuubi's power more effectively without the need for the traditional methods of suppressing and drawing on the fox's chakra. This would change his relationships with his peers too. He might be seen as an oddity, but also as someone with great potential.
Well, it could be that Konan finds Naruto alone and decides to take him in. Maybe she sees his potential and wants to protect him from the harsh world of shinobi. She could teach him some of her own unique skills, like her paper ninjutsu. And Naruto, with his positive attitude, might influence Konan in return, making her more open and hopeful.
Well, if Naruto was raised by Whis, he'd likely be exposed to a whole new world of power levels. Whis could introduce Naruto to the concept of godly ki. Naruto's ninjutsu might be enhanced or even combined with ki - based attacks. Also, Whis's sense of discipline would surely have an impact on Naruto's growth, both as a fighter and as a person. Maybe Naruto would become more refined in his fighting style, rather than relying solely on brute force like he sometimes does in the original story.
In this fanfiction, the dragon could also introduce Naruto to a whole new world or dimension. There, Naruto would face different challenges and enemies. The dragon's training would be specifically tailored to help Naruto survive and thrive in this new and strange environment. He might learn to fly, for instance, or communicate with other mythical creatures, which would be really exciting for the readers.
Well, for a 'naruto raised by samurai' fanfiction, the story could start with Naruto being found by a group of samurai. They would raise him as one of their own. Naruto would grow up learning the ways of the samurai, like how to handle a katana and the importance of loyalty. This would lead to interesting interactions when he meets shinobi later. He might have a different view on the ninja world, perhaps seeing some of the shinobi ways as unethical compared to the samurai code.