In the fanfiction 'Training with the Legend', Madara starts training Naruto after realizing that Naruto has the willpower to face any obstacle. He imparts his combat strategies and survival skills. The story shows how Naruto adapts to Madara's strict training regime. Naruto's growth under Madara's tutelage is shown through his battles against Akatsuki members, where he uses the skills he learned from Madara to outwit and defeat them.
In some fanfictions, Madara trains Naruto in the art of swordsmanship. Since Madara was a formidable warrior, he could pass on his skills. Naruto, who is mainly known for his ninjutsu and taijutsu, might discover a whole new combat style under Madara's tutelage. This could lead to some epic battles where he surprises his enemies with his newfound skills.
Well, there's also 'Naruto's Training with Madara: A New Path'. In this fanfiction, Madara doesn't just train Naruto physically but also mentally. He teaches Naruto how to face his inner demons and use that to fuel his growth, which is a really cool concept.
Another plot could be that Madara trains Naruto in the art of genjutsu. Naruto, who is not typically known for his genjutsu skills, starts to learn from Madara, the master of illusions. This creates a new dynamic as Naruto has to adapt his straightforward fighting style to incorporate the subtleties of genjutsu, and it also shows his growth as a more well - rounded ninja.
Well, in such a fanfiction, Madara's training might enhance Naruto's physical strength. He could teach Naruto some advanced Uchiha techniques which Naruto can combine with his own Uzumaki powers. For example, Naruto might learn better chakra control from Madara, enabling him to use his Rasengan more effectively and with less chakra waste.
The Akatsuki could be antagonists. They might see Sakura being trained by Madara as a threat to their plans. Since Madara has his own motives and is associated with the Akatsuki, they could fear that Sakura will become a powerful force against them if she is fully trained by him.
One possible plot idea could be that Madara sees Sakura's potential in medical ninjutsu and trains her to combine it with combat in unique ways. For example, she could learn to use her medical chakra to enhance her physical attacks or to disrupt an opponent's chakra system more effectively during battle.
Madara could also save Naruto by using his knowledge of the ninja world. Maybe he has some inside information about a plot against Naruto and he intervenes in time to stop it. He might have discovered a secret plan by an enemy group and takes action to keep Naruto out of harm's way. This could involve manipulating events behind the scenes or directly confronting the threat.
Yes, there might be such a fanfiction out there. The Naruto fandom is vast and creative, and fans often come up with unique and unexpected family relationships in their fan - created stories.
Some fanfictions might depict Naruto as having a deeper understanding of the chakra system than ever before. He could have found a way to disrupt Madara's connection to the chakra source, or maybe he was able to use his own chakra in a way that nullified Madara's powerful jutsus. Also, Naruto's experience from all his previous battles might have led him to anticipate Madara's moves and strategies, allowing him to stay one step ahead and ultimately defeat him.