It's possible that their training would focus on teamwork. They are both part of the same village, and better teamwork can benefit the whole community. Shikamaru could come up with complex training drills that require Naruto to use his speed and strength in coordination with Shikamaru's planning. This would not only improve their individual skills but also their ability to fight as a team.
In the fanfiction, they could face a common enemy. Naruto, with his powerful ninjutsu and Shikamaru, with his clever strategies, would have to work together. For example, they might be up against a group of rogue ninjas. Naruto could be the main force in direct combat, while Shikamaru uses his shadow jutsu to immobilize the enemies at crucial moments, and during their training, they prepare for such scenarios.
However, Naruto also has a lot to offer. So, in a way, they could be mutual mentors. Naruto's unwavering determination and his experience in facing powerful foes could inspire Shikamaru to be more bold in his actions. So, it's not necessarily a one - way mentorship.
In the 'naruto trains boruto fanfic', Naruto might teach Boruto some powerful ninja techniques. For example, he could show Boruto how to master the Rasengan more effectively. Maybe he'd also train Boruto in the art of stealth and how to read an opponent's moves better.
In this fanfiction, Naruto might gain some unique jutsu skills from Itachi. Itachi is a very powerful shinobi, so he could teach Naruto advanced techniques of chakra control and some secret Uchiha clan jutsu.
In a time - travel fanfiction like this, they could also have the opportunity to meet long - lost characters or discover secrets that were lost in time. Naruto and Shikamaru could learn about the origin of some of the powerful jutsus in their world. And perhaps they could use their knowledge of future technology or ninja tools to create something revolutionary in the past. This could potentially change the balance of power among the ninja villages. However, they would also have to be careful not to be discovered as time - travelers, as that could lead to all sorts of complications.
Well, Naruto would probably become extremely powerful. Goku's training methods are intense and focus on pushing physical limits. Naruto, with his already strong will and chakra, could gain new levels of strength. He might learn how to better control his chakra in ways similar to how Goku controls his ki. Also, Goku could teach Naruto some of his signature moves, like the Kamehameha, which Naruto could potentially adapt to his own style using chakra.
Well, it could lead to a lot of confusion. Shikaku might be surprised to see Naruto with Shikamaru. Maybe he'd start asking questions about what they were up to, whether it was some sort of training or just hanging out. It could also potentially create some comical moments as Shikaku tries to figure out their relationship in the context of the fanfic.
One possibility is that their kids would have a very special relationship with the other ninja families in the village. Since Naruto is so well - known and Shikamaru is highly respected for his smarts, the kids might be expected to live up to great expectations. They could also be the center of some new friendships and rivalries among the younger generation of ninjas. And perhaps they'd be involved in some new adventures that are related to the peace - building efforts in the village, just like their parents were in different ways.
In fanfiction, if Goku trains with Grand Priest, he might achieve new levels of power. Goku is always eager to get stronger, and the Grand Priest is extremely powerful. He could learn new techniques that are beyond the Saiyan's current understanding, perhaps even something related to the Angels' unique powers.
Well, one possibility is that he'd have to deal with all the social norms and expectations that come with being a girl in his world. Maybe he'd be shocked by how differently people treat him. For example, his male friends might be more protective or act differently around him. Also, he could discover new things about himself, like a different sense of fashion or a newfound interest in activities typically associated with girls.
There could be a focus on Naruto learning new forms of the Rasengan. Hokage Naruto, with his vast experience, could teach Naruto different ways to infuse the Rasengan with other elements more easily. Maybe Naruto would learn how to quickly switch between a Fire - Rasengan and a Wind - Rasengan during combat.