Well, in certain fanfictions, Naruto's super speed is often linked to his chakra control. By manipulating his chakra in a unique way, he can enhance his leg muscles' power, allowing him to run or move at incredible speeds. This super speed also enables him to perform his signature jutsus more effectively, like the Rasengan. He can close the distance between him and his target very fast and land the Rasengan before the enemy can react.
In some fanfictions, Naruto's super strength might be shown through his ability to effortlessly lift extremely heavy objects like massive boulders or entire buildings. This could be a result of his enhanced chakra control and physical training.
In the 'naruto is super smart fanfiction', Naruto's intelligence might be shown through his long - term planning. He could foresee potential threats to the village and start preparing for them well in advance. For instance, he might set up training programs for the younger generation to ensure the village's future safety. His smartness also extends to his understanding of the political climate within and outside the village, allowing him to navigate through tricky situations.
Naruto's super speed and strength in fanfiction can vary widely. His speed might be enhanced to the point where he can move faster than lightning in some stories. His strength could be such that he can lift mountains. There was this one fanfiction where Naruto's new - found speed and strength were the result of a special training regime he underwent. He used his speed to dodge enemy attacks that were too numerous to count and his strength to defeat a powerful enemy who was thought to be invincible.
One way it could manifest is in his training methods. He might be more strict and dedicated with Naruto compared to other students. He could also try to monopolize Naruto's time for training, not wanting other ninjas to interfere with Naruto's growth under his guidance.
Well, in certain fanfictions, Naruto might use his genjutsu in a more strategic way. He could be good at genjutsu that makes the opponent see multiple copies of him, not just the regular shadow clone jutsu but more like an illusionary army. This gives him an edge in combat as the enemy can't tell which is real and which is fake. Also, he might use genjutsu to infiltrate enemy strongholds by making the guards see things that aren't there, like an empty corridor instead of him sneaking in.
Some fanfictions might depict Naruto's lightning power as being connected to his emotions. When he gets angry or determined, the lightning power becomes more intense. He could use it to charge up his other jutsu, like his Rasengan. By infusing the Rasengan with lightning, it becomes a more powerful and deadly attack, with the added electrical damage that can disrupt an opponent's chakra flow.
In fanfiction, Naruto's proficiency in genjutsu could be really interesting. He might be able to combine his genjutsu with his chakra control skills. Since he has a large amount of chakra, he could create very large - scale and long - lasting genjutsu. Maybe he uses genjutsu to train himself, by creating illusions of powerful enemies to fight against. This not only improves his combat skills but also his mental strength as he has to constantly break out of his own genjutsu when things get too tough. And he could also use genjutsu to make his opponents relive their worst nightmares, weakening their will to fight.
The fear might be manifested in the Kyuubi's attempts to negotiate with Naruto rather than fight. In fanfiction, the Kyuubi could offer Naruto things or make promises in order to avoid a situation where Naruto uses his power against it. This shows that the Kyuubi is aware of Naruto's strength and is scared of the consequences of going against him.
He might start by practicing simple movements at high speed. Just getting used to running and stopping quickly without crashing into things.
In some fanfictions, Naruto's high lightning affinity might show up as him being able to quickly learn lightning - based jutsus. For example, he could master advanced lightning techniques like the Chidori in a very short time, much faster than in the original story. He might also be able to combine his existing skills with lightning chakra more effectively, creating unique and powerful attacks.