In such a fanfic, Naruto might gain some unique abilities from the bite. Maybe it would change his chakra nature or give him a new form. It could also lead to a different relationship with the creature that bit him. For example, if it was a demon, he might have to deal with its influence in a new way compared to Sasuke.
It could be a powerful enemy like Orochimaru. Orochimaru was always interested in Sasuke's potential, but if the plot changes and Naruto gets bitten, Orochimaru might see Naruto as an equally interesting subject to experiment on.
Another possibility is that it could be a cursed or possessed person. They might not be in control of their actions and end up biting Naruto. This could be part of a larger, darker plot where a curse is spreading and Naruto becomes an accidental victim instead of Sasuke.
Well, if Naruto gets bitten instead of Sasuke, it could lead to a whole new set of powers for Naruto. Maybe he'd gain some sort of dark or unique ability that changes his fighting style. It could also change his relationship with other characters. For example, his friends might be more worried about him and try to find a way to cure him. And his enemies might see him as an even greater threat or a new target.
If Stiles were bitten instead of Scott, it would change the entire plot of the story. Stiles is a very different character from Scott. He's more impulsive in his thinking at times. So, when he gets bitten, he might not immediately accept the situation. He could go through a phase of denial, which could put him in danger. His friends would have to work extra hard to convince him to embrace his new identity. And his relationship with Derek might be really interesting, as Derek would have to deal with a much more talkative and inquisitive new werewolf.
In such a fanfic, Harry might figure out the mystery of the diary much earlier. Since Harry has more experience with dark magic threats, he could potentially avoid many of the dangerous situations Ginny got into. For example, he might immediately recognize the diary as a dark object and start investigating it without getting influenced by it like Ginny did.
He would probably be extremely powerful. Naruto is already a very skilled ninja with his own set of abilities like the Rasengan. A lightsaber would add a whole new dimension to his combat skills. He could combine his chakra control with the lightsaber's unique properties. For example, he might be able to infuse his chakra into the lightsaber to make it even more powerful or use his speed and agility to perform some amazing saber techniques that are a blend of Jedi and ninja styles.
Well, he'd probably try to train it like he trains his ninja skills. Maybe use it in battles against other ninjas or Pokémon trainers in the fanfic world. He might name it something really cool, like 'Summonmon' or something.
Well, he would probably become extremely powerful. The Tenseigan has some amazing abilities, so Naruto could use it to enhance his already formidable skills like his Rasengan and his Sage Mode. He might be able to take on even stronger enemies with ease.
Well, in this fanfic, Naruto getting promoted could lead to a whole new set of adventures. He might be put in charge of training new ninja, which would be quite a change. He'd have to learn how to lead as well as he fights. And his relationships with other characters, like Sakura and Sasuke, could also evolve in interesting ways. For example, they might have to adjust to his new status and work under his leadership in some cases. Also, his new position could bring him into conflict with some of the more traditional ninja families who might be jealous of his rapid rise.
The fanfic could explore how Sasuke deals with his emotions when Naruto is sick. He might be conflicted between his old rivalry feelings and his newfound, deeper feelings for Naruto. Sasuke could also be the one to stay by Naruto's side when everyone else is busy. He'd watch over Naruto while he sleeps, and when Naruto wakes up, there could be a moment of intense eye - contact that shows the unspoken bond between them.