There could be a deeper reason for the fight in the fanfiction. Maybe Flash has accidentally found out something about Peter's double life and is trying to blackmail him. This would lead to a more intense and emotional fight, with Peter having to protect his secret identity at all costs.
Well, if Peter Parker becomes Flash in fanfiction, he might use his new super - speed in really interesting ways. For example, he could swing between buildings as Spider - Man even faster. Maybe he'd combine his spider - sense with the Flash's ability to see things in slow motion, making him an even more formidable hero. He could also use the Flash's speed to create new web - slinging techniques, like using his speed to make the webs shoot out faster and farther.
One possible scenario in such a fanfiction could be a school - related incident. Flash taunts Peter in front of everyone, and Peter, tired of it, decides to fight back in a more subtle way. Maybe he uses his super speed and reflexes to dodge Flash's attacks and make Flash look foolish without using full - on Spider - Man powers.
In the fanfiction, they might be kidnapped by a supervillain who wants to use them as bait to lure Spider - Man. Maybe the kidnapper thinks Flash has some connection to Peter Parker (aka Spider - Man) and plans to expose his identity through Flash.
Well, perhaps Flash gets into some sort of trouble like being kidnapped by a group of villains who want to use him as a bait to lure Spider - Man (Peter Parker). Peter, using his spidey - senses, tracks Flash down and has to fight off the bad guys to save him. It could also be that Flash accidentally stumbles upon a dangerous experiment and Peter has to save him from the resulting chaos.
Peter might get invited to the Avengers' headquarters. There, he could see all their cool gadgets and technology. He would be like a kid in a candy store. The Avengers could ask him for advice on how to deal with street - level threats, since he has more experience in that area. Peter would be really happy to contribute and feel like he's part of the team.
In such a fanfiction, Peter might lose his usual control. He could accidentally reveal his identity while drunk. For example, he might start talking about his Spider - Man adventures without realizing it.
In a 'Peter Parker meets Shuri' fanfiction, they could team up to fight a common enemy. Maybe a new super - villain emerges in both their worlds and they combine their unique skills. Peter with his spider - abilities and Shuri with her brilliant Wakandan technology.
Well, he might become extremely powerful. He could use the power of the gauntlet to protect his city in ways he never could before. Maybe he could even defeat the most powerful villains with a single snap.
He could be using his phone to track a villain's movements. Maybe he installed some special app on his phone that can detect unusual energy signatures. So while the teacher is droning on about history or math, Peter is secretly following the path of a super - villain who is on the loose in the city.
If Peter Parker joins the Avengers in fanfiction, it would change the team dynamics significantly. Peter is used to operating on his own in Queens, but with the Avengers, he'd have to learn to work as part of a much larger and more powerful team. He could introduce the Avengers to his street - level knowledge, which might be useful when dealing with villains who operate in the shadows. His relationship with Aunt May could also play a role, as the Avengers might need to protect her from any potential threats. Plus, his growth as a hero would be accelerated by being around such experienced and powerful teammates.