Perhaps Peter discovers a new threat that is specifically targeting his loved ones because of his Spiderman identity. To protect them, he decides that the only way is to stop being Spiderman. He might try to live a completely normal life, away from the superhero world, and hope that the danger will pass his family and friends by.
Maybe Peter gets tired of the double life. He realizes that being Spiderman has cost him too much, like his normal relationships or his own mental health. So he decides to give up the mantle.
It could be a new villain who manages to make Peter question his role as Spiderman. This villain might use mind - games or expose Peter's identity in a way that makes him want to give it all up.
In fanfiction, if Spiderman stops the Civil War, he might use his charm and quick thinking. He could talk to both sides, making them see the bigger picture. Maybe he reveals some hidden truth that makes everyone realize they've been misled. For example, he could expose a villain's plot to divide the superheroes.
Perhaps there's been some sort of miscommunication or misunderstanding among Peter and his friends. Maybe a villain has manipulated the situation in such a way that his friends now think Peter has betrayed them, so they've cut off all ties with him. This would create a very lonely and difficult situation for Peter in the fanfiction.
Fanfiction about Peter and MJ in the context of Spiderman and Spiderwoman often plays with different timelines and universes. For instance, there could be a fanfic set in an alternate universe where MJ has superpowers too. This would change the dynamics of their relationship completely. Writers can also explore how Peter and MJ interact with Spiderwoman in these fictional stories.
One possible plot could be that Spiderman and Rogue meet during a superhero event where they initially clash due to their different powers and ways of operating. But as they get to know each other better, they realize they share a common goal of protecting the innocent. They start to work together more often, which leads to a romantic relationship. Eventually, they decide to get married in a secret ceremony attended only by their closest superhero friends.
Well, perhaps in the fanfiction, Spiderman saves a woman who later turns out to be pregnant with his child. He doesn't know about it until she shows up at his doorstep with the baby. Spiderman then has to figure out how to take care of the baby. He might start using his web - slinging skills in new ways, like creating a safe web - hammock for the baby to sleep in while he's on patrol, and he has to deal with the reactions of his friends and allies, like Mary Jane or Ned.
One possible plot twist could be that the real danger was not what it seemed at first. For example, while the Avengers thought they were being attacked by a supervillain, it was actually a test set up by a greater power. And Peter discovers this truth while trying to save them. Another twist could be that Peter has to sacrifice one of his powers temporarily to save the Avengers, which changes his approach to being a superhero.
Maybe Peter inherits Tony's high - tech gadgets. For example, he could get access to some of Tony's Iron Man tech, which would be a huge deal. This could set him on a new path in his superhero journey, perhaps allowing him to upgrade his own suit or develop new abilities.
Maybe Peter punches Steve because of a misunderstanding. For example, Steve might have been wrongly accused of something that Peter holds dear, like endangering his family or friends. In his anger, Peter decides to take matters into his own fists.
In a 'Peter slaps Edmund fanfiction', it could start with a misunderstanding. Edmund is wrongly accused of stealing or lying, and Peter, believing the false information, lashes out and slaps him. The rest of the story could be about the search for the truth, how Edmund feels wronged, and how Peter realizes his mistake. It might also involve the relationship between the two characters being strained at first and then gradually repaired as the truth comes to light.