In the fanfiction, Naruto could also learn some spiritual or chakra - based techniques. He might discover a way to use his chakra to sense the emotions or intentions of his opponents. This would give him an edge in battles, as he could anticipate their moves better. Or he could learn a technique that allows him to transfer his chakra to others in a more efficient and powerful way, enabling him to heal or boost his comrades' abilities during combat.
In this fanfiction, Naruto's serious training could be a turning point for his character. As he trains, he might encounter new challenges and mentors that shape his values. He could develop a stronger sense of purpose, not just to be recognized, but to truly master his skills for the sake of protecting his village and friends. This new - found determination might lead him to explore different jutsu and strategies, further evolving his combat style and overall character.
In many such fanfictions, Naruto might learn complex sealing techniques like the Seal of the Celestial Beasts. This could involve summoning and controlling powerful celestial entities through seals.
Kaguya might start with chakra control training. Since she has such a deep understanding of chakra, she could teach Naruto how to refine his chakra even more. For example, she could show him how to make his chakra flow in a more stable and efficient way. She may also use her knowledge of space - time ninjutsu to train Naruto in that area. Maybe she'd create special training grounds using her space - time abilities to test Naruto's reaction and adaptability.
He might start with basic earth manipulation. Just like how he learned to control his chakra in the original series, he would need to understand the flow of chakra in relation to earth. Maybe he'd practice making small pebbles levitate at first.
Perhaps seeing his friends in danger during a mission after graduation could make him get serious. He realizes he needs to step up to protect them.
During the training, Naruto could face the challenge of balancing his own power with Kurama's. It's not easy to incorporate such a powerful and wild source of chakra into his own fighting style. He also has to face the fact that Kurama's training is not going to be easy - going. There will be setbacks and failures, and Naruto has to keep his motivation high. Moreover, Naruto may have to face the jealousy or suspicion of other ninjas who might not understand his new - found power from Kurama's training.
Goku could teach Naruto how to fight without relying too much on ninjutsu. Goku mainly uses his physical strength, speed, and ki in combat. Naruto could learn to better use his own physical abilities, like hand - to - hand combat and quick dodges, which would make him a more well - rounded fighter.
He could develop a 'Flash - Clone Jutsu'. He'd use his super - speed to create clones that are almost indistinguishable from his real self due to the speed at which they are created. Another technique could be 'Speed - Healing'. Since the Flash has a fast metabolism which aids in healing, Naruto could develop a similar ability where his wounds heal much faster when he uses his speed chakra.
Kakashi could focus on Naruto's Rasengan training, helping him develop new variations. He might also give Naruto training in reading opponents' moves better. This would involve a lot of sparring sessions. Additionally, Kakashi could train Naruto in the use of ninja tools in more creative ways. Naruto often relies on brute force, and Kakashi could teach him to be more strategic with his equipment.
He could introduce some of the techniques he learned in Konoha, like the Rasengan variations. Maybe he'd also teach some of the more advanced chakra control methods that he picked up over the years.