Who would be the mentor in the 'naruto trains with shikamaru fanfiction'?

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.

It could be Dumbledore. He always seems to know about the hidden places and secrets in Hogwarts. He might secretly guide Harry to the Chamber of Secrets for training and provide him with some cryptic advice.

It could be an old and wise hermit who lives in the forest. This hermit has seen many things and has a vast knowledge of the skills sakura wants to learn. He guides her with tough love, pushing her to her limits but also providing valuable advice when she's in doubt.

It could be someone who doesn't want Sakura to become stronger. Maybe a rogue ninja who fears that a more powerful Sakura would be a threat to his plans. This antagonist might try to disrupt Naruto's training of Sakura by setting up various traps or distractions.

It could be someone from God Serena's past. Maybe an old rival who doesn't want God Serena to train Naruto because he fears Naruto will become too powerful. This antagonist might try to disrupt the training sessions and target Naruto to stop his growth.

It could be Sirius Black. He has a lot of experience in the wizarding world and, despite being on the run, he could find a way to communicate with Harry secretly. He could teach Harry about dark magic defense, which would be very useful in the tournament.

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.

In this fanfiction, Kakashi could also be Naruto's mentor in magecraft. Kakashi is known for his adaptability. He could start to study mage powers along with Naruto. They could learn together about new forms of magic, and Kakashi could use his combat experience to help Naruto understand how to use his mage powers in battle situations.

A traveling nen master could be Naruto's mentor. This master could be on a journey to spread the knowledge of nen. He crosses paths with Naruto and decides to teach him. The master might have a strict teaching style, pushing Naruto to his limits, but also guiding him carefully through the complex world of nen.

There's a possibility that it's a spirit or a deity in the world of bending. This entity is impressed by Naruto's tenacity and chooses to guide him on his journey of learning bending.