In a 'naruto trained by selphe fanfic', perhaps Selphe comes from a different ninja clan with ancient techniques. She could teach Naruto how to combine his existing Rasengan technique with her clan's special chakra manipulation. This would make Naruto's attacks even more powerful and unpredictable. Also, Selphe might train Naruto in mental discipline, which would help him better handle the stress of battles and his role as a future Hokage.
The fanfic could involve Selphe recognizing Naruto's potential not just as a physical fighter but also as a strategic thinker. She might introduce him to new forms of battle strategies used in her homeland. Along with that, Selphe could have a special connection to the Nine - Tails within Naruto. She could help Naruto better understand and utilize the power of the Nine - Tails without being completely overrun by it, leading to a new level of power for Naruto.
She could be someone with a special bloodline or ability. Maybe she has a unique form of chakra that gives her certain powers. In the context of training Naruto, her skills and knowledge are what make her important. She could be a mysterious figure who has been observing Naruto for a while and decides to take him under her wing to help him reach his full potential. For instance, she might have the ability to see the latent potential in others and wants to shape Naruto into a great ninja not just for his own sake, but also for the greater good of the ninja world.
Well, it could be that DIO imparts his unorthodox and powerful combat skills to Naruto. Maybe Naruto learns DIO's time - stopping ability in some unique way, which gives him an edge in battles against tough opponents in the Naruto universe. And he might also pick up DIO's menacing charisma, making him a more intimidating presence on the battlefield.
In a 'Naruto trained by ANBU' fanfic, the plot could involve Naruto being secretly taken under the wing of ANBU members. They might train him in stealth and more lethal forms of combat. This could lead to Naruto having a different fighting style compared to canon, and he might face different challenges as he grows stronger. For example, he could be involved in more covert missions early on and develop a reputation among the ANBU ranks.
Well, it could start with Naruto being sent on a special mission where he encounters Sasori. Sasori, seeing potential in Naruto, decides to train him. The training would likely be tough as Sasori is a strict teacher. Naruto would have to adapt to Sasori's methods. He might learn how to control multiple puppets at once, and this new skill could help him in battles against stronger opponents in the future. For example, when facing Akatsuki members or other powerful foes.
In a fanfic where Naruto is trained by Zetsu, the story could take an interesting turn. Zetsu has knowledge of the Akatsuki and their secrets. Naruto could learn about the organization from the inside out. This knowledge could help him in his quest to bring peace. He might also gain some physical enhancements. Zetsu is quite durable in his own way, and Naruto could inherit some of that sturdiness. This would make him an even more formidable opponent in battles against strong foes like Pain or Madara.
Well, it could be that Itachi trains Naruto to better control his chakra. Maybe Itachi sees potential in Naruto to bring peace to the ninja world and decides to pass on his unique skills like the Sharingan's insights on combat.
In a 'naruto trained by ruby' fanfic, perhaps Ruby could introduce Naruto to some unique combat styles. Maybe Ruby has her own set of skills like some kind of magic or special weapon techniques. She could teach Naruto how to combine his chakra with these new elements. For example, if Ruby has some sort of elemental magic, Naruto could learn to infuse his Rasengan with that magic for a more powerful attack.
A 'naruto trained by orochimaru fanfic' might have Naruto delving deeper into the secrets of the Sharingan. Orochimaru has always been interested in the Uchiha's power. So Naruto, under his training, could be exposed to knowledge about the Sharingan and its potential. This might lead to some interesting power - ups for Naruto, but also put him in the crosshairs of other powerful ninja who are also interested in the Sharingan's secrets.
Well, it could be about Naruto learning unique combat techniques directly from the Kyuubi. The Kyuubi, being a powerful and ancient entity, might teach Naruto some forgotten or forbidden jutsu. This would set Naruto apart from his original training path in the canon series. Maybe he'd learn how to use the Kyuubi's chakra in a more controlled and strategic way, like creating chakra shields or new types of elemental attacks.
Well, it could be that Naruto gets super powerful training from each of the Sannin. Jiraiya might teach him more advanced toad jutsus and how to better control his chakra. Tsunade could train him in medical ninjutsu and physical combat skills. Orochimaru, even though he's a bit of a dark character, could show Naruto some really unique and forbidden jutsus that Naruto has to learn to resist the dark side of. And all this special training could make Naruto a much more formidable shinobi in the fanfic.