One interesting plotline could be Naruto finding a new and extremely challenging training method that unlocks a unique and powerful jutsu. For example, he might discover a hidden cave with ancient training scrolls left by a forgotten ninja clan.
Maybe in the fanfiction, Naruto's extreme training involves teaming up with unlikely allies, like some of the more reclusive ninja from other villages. They could teach him different combat styles and strategies that are not common in Konoha, which would make his training more extreme and diverse.
A third plotline could be that Naruto teams up with some unlikely allies during his training trip. These could be former enemies who have also decided to seek power through training. Together, they face challenges that force them to put aside their differences and work towards a common goal, like protecting a sacred place full of chakra - rich resources.
Well, one could be about a kunoichi learning unique jutsu during her training. For example, she might discover a long - lost water - based jutsu that gives her an edge in battles. Another could involve her training with a mysterious and powerful sensei who has a hidden past related to the main Naruto storyline.
Kakashi could be a key character in the fanfiction. As Naruto's former teacher, he could provide guidance and set up the extreme training regimens for Naruto. Also, characters like Jiraiya might be present. Since he trained Naruto in the original series, he could play an important role in this extreme training scenario, perhaps teaching Naruto some advanced toad - related techniques.
One interesting plotline could be Kakashi teaching Naruto basic chakra control in secret. Naruto, being young and eager, quickly grasps some concepts but struggles with others. This could lead to some comical moments as Naruto tries to impress Kakashi with his progress.
In some fanfictions, their training might involve time - traveling. Maybe they go back in time to learn from the founders of Hogwarts. Harry could learn how to better control his connection to Voldemort through this time - traveling training, and Hermione could study ancient magic from the founders. This would add a whole new dimension to their skills and knowledge.
One interesting concept could be alternate universes where characters have different roles or powers. For example, Naruto might be a villain instead of a hero. Another could be crossovers with other anime or fictional worlds, like Naruto meeting characters from One Piece. Also, exploring deeper backstories for minor characters in fanfiction can be really engaging.
Well, in some Naruto Shippuden extreme fanfiction, there are storylines that explore romantic relationships in more depth. For example, a story could be about Hinata's journey to become stronger not just for herself but also to be a better partner for Naruto. Or perhaps a fanfic where Sakura discovers a new medical ninjutsu that has the power to change the outcome of major battles, and how that affects her relationships with her comrades. There are also those that focus on the Akatsuki members' pasts and how they could have been redeemed.
One interesting aspect could be the unique character interpretations. Fanfiction often explores different sides of Naruto characters that may not be as fully developed in the original series. It can also introduce new storylines that are centered around the Naruto universe but with a fresh spin.
Well, one interesting aspect could be the character development of the kunoichi. They might learn new jutsus or improve their combat skills in unique ways. For example, Sakura could be trained in a special medical - ninjutsu technique that combines with her strength - based attacks. Another aspect is the relationships that form during training. Maybe there are rivalries or friendships that are strengthened or tested. Also, the fanfiction might explore different training environments, like a secret forest training ground or an underwater training area.
Well, in 'naruto shippuden training fanfiction', the relationships between characters can be explored in a new light during training. Like Sasuke and Naruto's rivalry might be intensified or mended during a shared training session. Also, the fanfiction might introduce new training locations, such as a hidden dimension full of dangerous creatures that the characters have to overcome to gain power.