He could develop the ability to combine his chakra with Superman's powers. For example, he might be able to use his Rasengan while flying at super - speed. Or he could infuse his chakra into his heat vision to make it even more powerful.
If Naruto had Superman's powers in fanfiction, it would change everything. His village would be almost invincible. With Superman - like powers, Naruto could fly around and keep an eye on all the hidden villages, preventing any surprise attacks. His super strength could be used to rebuild the village in no time after any destruction. Also, his x - ray vision could be used for various things like finding hidden traps or enemies. The power dynamic in the ninja world would shift completely, and Naruto would become an even greater legend.
Well, in fanfiction, Naruto's chakra - based powers like the Rasengan could be combined with Superman's super strength. For example, Naruto could use his chakra control to enhance Superman's punches, making them even more powerful. Or Superman's heat vision could be mixed with Naruto's fire - style jutsu to create a more intense and unique attack.
In a fanfiction scenario, Superman's ability to fly could give Naruto a new perspective on combat. Naruto could learn to use the airspace more effectively. He might even develop new jutsu that are based on aerial combat, inspired by Superman. And Superman could learn from Naruto's ability to sense chakra. This could help him detect hidden threats or enemies that are using some form of energy cloaking device in his own world.
In a Naruto - Superman powers fanfic, perhaps Naruto gets some of Superman's powers accidentally. He struggles to control the new powers like heat vision and super speed along with his own ninja abilities. Superman, on the other hand, discovers he can use chakra in a limited way and they both have to figure out how to use these new combinations of powers effectively.
In this fanfiction, the prototype powers could be something like an early form of chakra manipulation that is different from the traditional Naruto world's chakra use. It might be more raw and unrefined, with the potential for new and unique jutsu.
If Naruto had Superman's powers in fanfiction, he would be nearly unstoppable. His existing ninja skills combined with Superman's flight, super strength, and heat vision would make him a formidable force. He could easily defeat his enemies in the Naruto universe, like Orochimaru or Pain, without breaking a sweat.
Naruto could use his Rasengan with Superman's strength. Imagine the power of a Rasengan thrown with Superman - level force. It would be extremely destructive.
With his friends like Sakura and Kakashi, Naruto would become an even more reliable protector. Sakura would be in awe of his new powers at first, but then she would start to worry about Naruto getting too cocky or reckless with them. Kakashi, on the other hand, would be more cautious and would try to guide Naruto in using these powers responsibly, much like he did with Naruto's ninja training.
His hidden powers might be the ability to control all five basic nature types without any training. In the original story, Naruto had to work hard to master different nature types. But in a fanfiction, it could be that he has this innate ability which was hidden all along. This would make him extremely powerful and feared by his enemies.