In a fanfiction, Naruto could use Superman's powers to explore new areas. He could fly to the far reaches of the Naruto world that have never been explored before. There, he might discover new chakra sources or new types of ninjutsu. His super strength could also help him move large boulders or structures that were previously inaccessible, revealing ancient secrets about the ninja world that could change the way they view their history and abilities.
One possible plot could be Naruto using his spider powers to create webs and swing around the Hidden Leaf Village for faster transportation. He might also use the webs to trap enemies during battles, just like how a spider catches its prey.
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.
In a fanfic about Naruto having hollow powers, the plot could revolve around the idea of Naruto accidentally awakening these powers during a particularly intense battle. These powers could initially be uncontrollable, causing chaos. Naruto would then have to train hard to master them. He might find that his hollow powers give him a new form, like a transformation similar to the Nine - Tails mode. This new form could have unique abilities that he could use to protect his village and friends, and also to explore new regions and face new threats that normal ninja techniques couldn't handle.
The plot could involve Naruto using Wolverine's healing factor in battles. He'd be even more difficult to defeat as his wounds would quickly heal. Maybe he could also use Wolverine's adamantium claws in a unique way, like combining them with his chakra attacks.
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.
One possible plot could be that Naruto is suddenly bestowed with Superman's powers. He has to hide it from his friends at first because he doesn't understand it. Then, as he starts to master these powers, he uses them to protect the Hidden Leaf Village from a new and powerful threat that normal ninja techniques can't handle.
Maybe Naruto's death powers are a result of some ancient curse or a powerful jutsu gone wrong. This could lead to a plot where he has to find a way to reverse it, while also using it to protect his village. He might encounter other shinobi who have similar powers and learn from them how to use it more effectively.
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.
A more interesting plot twist could be related to the origin of these powers in the fanfiction. Maybe it's not just a random occurrence. There could be a hidden connection between Tatsumaki's world and Izuku's world. For example, some ancient prophecy or a secret experiment by an organization that spans across different anime universes. This discovery could change the whole dynamic of the story as Izuku has to not only master his powers but also figure out the mystery behind them.
One possible plot could be that Harry discovers he has Doctor Strange's powers after a strange encounter with an ancient artifact. He then has to learn to control these powers while also dealing with the wizarding world's reaction. Some might be scared, others intrigued.