His web - slinging ability could also have unforeseen consequences. He might leave behind his webs in places that people in the past don't understand. This could cause panic or be seen as some kind of strange new technology that changes the course of scientific research in the wrong way.
His spider - sense could give him an unfair advantage in the past. He could predict events and use that knowledge to his benefit in ways that might disrupt the natural flow of history. For example, if he uses it to win the lottery or something similar, it could have a huge impact on the economy of the past and thus change the future in ways he didn't anticipate.
His super strength could easily disrupt the past. For example, if he's not careful while trying to stop a crime, he might accidentally cause more damage than good. He could break things that were important in the original timeline.
His powers might also influence the people in the past in unexpected ways. Maybe his dark chakra could seep into some characters and start to corrupt them earlier than in the original story. This could lead to new alliances and rivalries forming, completely different from what happened before. For instance, a character who was originally a hero could be turned into a villain because of Dark Naruto's influence.
His super strength could accidentally cause destruction in the past. For example, if he's not careful while saving someone, he might break a building that was historically important. His spider - sense could also give him an unfair advantage in situations where he shouldn't have such an edge, like in a simple street fight in the past.
Their powers are quite strong. They could easily overpower many of the villains in the past. This might lead to a quick end to some threats that were difficult to deal with in the original timeline. For instance, if they faced Frieza in the past, they could defeat him without much trouble, changing the course of the Saiyan story.
Naruto's powers, especially his Nine - Tails chakra, could have a huge impact. He could use it to fend off stronger enemies much earlier. Hinata's Byakugan would give her an edge in predicting enemy moves. They could use their powers together to change battles that were originally lost. For example, Naruto could use his Rasengan more effectively with Hinata's support and knowledge from the future.
If Spider - Man got new powers like telepathy in fanfiction, it could strain his relationship with some characters. They might feel he's invading their privacy. But with others, like Daredevil who also has enhanced senses, it could bring them closer as they share a new kind of understanding.
Naruto's power of the Nine - Tails would be a major factor. In the past, the Nine - Tails was feared and hunted. If Naruto shows up with the power under control, it could change how people view the beast. His chakra reserves, which are huge because of the Nine - Tails, could allow him to perform feats that were previously thought impossible in the past, like quickly rebuilding a village or fending off a large - scale invasion on his own.
His powers would likely shock the past characters. They might see him as a great hope or a potential threat. If he uses his powers openly, it could change the way the Z - fighters train and view their own power limits.
Well, his powers would also attract a lot of attention. Scientists in the past might be intrigued by his abilities and try to study him. This could either lead to a better understanding of superhuman abilities in that timeline or it could create chaos as different groups try to capture him for their own purposes. His presence could also inspire others to strive for greater physical abilities.
His friends might be a bit wary at first. But if Naruto uses his powers for good, like saving them from danger, they would accept him more. His relationship with Sasuke could change too. Sasuke might see Naruto's new powers as a threat or as something to strive for in terms of power.
If Spider - Man gets new powers like mind - reading, it could strain his relationships. For example, his friends might feel violated if he accidentally reads their thoughts without permission. On the other hand, it could also strengthen his bond with some characters, like his mentor, as he can better understand their teachings.