The plot could center around Naruto being in a situation where he has to be trained by Skull for a specific purpose. Maybe there's a new threat in the ninja world that requires Naruto to learn skills that only Skull can teach. Skull could train Naruto in the use of ancient or forbidden jutsu, but with a different perspective than the traditional ninja masters. This could lead to Naruto developing new abilities and a new way of thinking about his role as a ninja.
Maybe it could be about Skull using some unique and unorthodox methods to train Naruto. For example, Skull might introduce Naruto to some new combat styles or ways of chakra control that are different from what he learned in the original series.
Skull could be an original character created for this fan fiction. He might be a powerful ninja from a far - off land with unique skills and knowledge.
One idea could be that Naruto is sent to Skull Island on a mission. He discovers unique chakra - based creatures there. He has to use his ninja skills and Sage Mode to survive and understand the mysteries of the island. Maybe he forms an alliance with some of the native beasts against a common enemy.
One plot idea could be the discovery of a new species on Skull Island that has the ability to communicate telepathically with the main character. This new species could lead the character on a quest to find a hidden relic that has the power to control the island's natural disasters.
Well, in this fanfic, perhaps Naruto is sent to the Hidden Mist for some sort of exchange program. There, Mangetsu takes him under his wing. Mangetsu might train Naruto not only in combat skills but also in stealth and strategy. Naruto, with his already strong will and determination, quickly adapts to Mangetsu's teachings and starts to combine his own Uzumaki - like chakra control with the water - style jutsu he learns, becoming a more versatile ninja.
Well, it could be about Naruto being forced into a dark situation where he has to train for killing. Maybe he's been misled or there's a great threat that makes him think this is the only way. For example, he might be tricked by an enemy who disguises as a friend and convinces him that the only way to protect the village is to become a killer.
Well, in such a fanfiction, Naruto might learn unique skills from the summons. For example, he could learn stealth from a cat - like summon or brute strength tactics from a bear - like one.
In the 'naruto trained seriously fanfiction', Naruto could be training with his friends in a more serious way. They might form a special training group where they push each other to their limits. For example, they could be training to improve their teamwork and combination jutsus. Naruto might focus on his speed and strength training while also learning how to better coordinate with his friends' abilities, like Sasuke's Sharingan - based attacks and Sakura's medical and combat skills.
In this fanfiction, perhaps Naruto could learn some unique jutsu from Asuma. Asuma was known for his wind - style jutsu, so he might teach Naruto advanced wind - style techniques that Naruto could incorporate into his Rasengan, creating a more powerful attack.
Perhaps in this fanfic, Kosuke trains Naruto not just in physical combat but also in the mental aspects of being a ninja. He might teach Naruto how to handle difficult situations, make strategic decisions, and overcome his inner demons. This could lead to Naruto becoming a more well - rounded and powerful ninja.
The fanfic could involve Asura taking Naruto to some secret places for training. There, Naruto might discover hidden aspects of his own heritage. He could also meet other powerful beings related to Asura. Asura could train Naruto to master his emotions better, which is crucial in the ninja world. This training would help Naruto make more rational decisions during high - stress situations like in the middle of a war or when facing a powerful enemy who tries to manipulate his feelings.