The theme of isolation could also be present. As he is entrenched in loss, he may isolate himself from his friends and family, which is a common reaction to grief. This could then lead to a sub - theme of self - discovery as he has to find himself again outside of his relationships.
One possible theme is grief and how it affects a person. Peter Parker's losses could lead to a deep sense of grief that he has to work through. Another theme could be redemption. He might be trying to redeem himself for not being able to prevent the losses in the first place.
In the fanfiction, the author might be using Peter's entrenched state of loss to show his vulnerability. This could be a contrast to his superhero persona, Spider - Man. It may also be a way to introduce new relationships or story arcs where he has to learn to overcome his losses and find a new purpose.
One possible theme is the fragility of life. Despite Peter's powers, his death in fanfiction can show that no one is invincible. It can also explore themes of redemption for other characters. For example, a villain might have a change of heart after Peter's death. There could also be a theme of hope emerging from the ashes of his death, with new heroes rising up.
Another way it could be presented is in relation to his superhero identity. The stress and danger he faces as Spider - Man might make him more hesitant or eager (depending on the writer's take) to have this kind of intimate experience. For example, a fanfic could show how he finally decides to open up in this way after a particularly harrowing battle where he realizes life is short.
One possible plotline could be Peter struggling to communicate his superhero identity and his daily life challenges to his friends and family without using his voice. Maybe he has to develop a unique sign language or other non - verbal communication methods.
If such a fanfiction exists, it could be a very dark interpretation. Maybe it's part of a scenario where Peter is in a fight with a villain who has overpowered him and is trying to kill him in this brutal way. Or it could be a non - villain - related situation, like an accident or a misdirected power use by another character, but this is still a very disturbing concept.
Another theme is the struggle between normal life and superhero life. Peter has to deal with school, homework, and teenage problems while also being Spider - Man. Fanfictions often show how he manages to juggle these two very different aspects of his existence.
A theme that often shows up is the importance of support. His friends and family play crucial roles in helping him deal with the situation. In some fanfictions, they are the ones who encourage him to not give up on his superhero duties. Also, self - discovery can be a theme. Peter may learn new things about himself while in the wheelchair, like his own strength beyond physical abilities.
One possible scenario could be that Peter sacrifices himself to save others during a crucial battle in the Endgame - like situation in the fanfiction. Maybe he uses his powers to hold off a powerful enemy while the rest of the heroes complete a vital task.
He could be an intern at Stark Industries. Since he's a smart kid, it's possible that he gets an internship at Stark's company. He might be working on some minor projects and accidentally stumbles upon something important related to the main plot of Iron Man 2.
A possible plotline could be that Peter's identity as Spider - Man is at risk of being exposed, and Jessica Jones helps him cover it up. She uses her skills as a private investigator to mislead those who are getting too close to the truth.