The Avengers or other superheroes in the fanfiction might get involved. They could sense that something is wrong with Peter and offer their support. Maybe Tony Stark, if he's alive in the story, could use his resources to get Peter the best psychological help. This could also lead to a new storyline where the superhero community becomes more aware of mental health issues.
Well, his friends could find out. For example, Ned or MJ might stumble upon him in a vulnerable state. This would then lead to a deepening of their relationships as they try to help him. They could encourage him to seek professional help or just be there for him emotionally.
Peter himself could start to fight back against whatever led him to cut himself. He might realize that self - harm is not the answer and start to focus on his strengths. He could use his experience to help other characters in the fanfiction who might be going through similar struggles, thus becoming a symbol of hope and recovery.
In some fanfictions, Peter could have a sort of out - of - body experience. He might meet some important figures from his past or gain some new insights while his heart is stopped. This could then influence the way he approaches life and heroism once he is revived. And when he is revived, he might come back with new powers or a stronger sense of purpose.
Often, Peter will go off on his own path. He might start to form his own team or work independently to prove himself. For example, he could start taking on smaller villains in his neighborhood to show that he doesn't need Tony's support.
One way is through internal monologues. Peter can have long internal conversations with himself, debating where to go on the 'date', what to wear, etc. This would show his different aspects interacting.
Often, his friends start to search for him. His best friend Ned might use his tech - savvy skills to try and track him down. They might follow some leads that Peter left behind, like a special code or a hidden message.
The plot may develop with his enemies taking advantage of his weakened state. They might try to attack him while he's in the hospital or at home recovering. On the other hand, his allies, like the Avengers if they exist in that fanfiction world, could come to protect him and help him figure out what caused the collapse in the first place.
The story could develop with Steve Rogers being very shocked and then trying to reason with Peter. He might hold back from fighting back because he understands Peter is young and could be acting out of emotion. For example, he could start a conversation to clear the air and find out what's really wrong.
At first, it would be really rocky. Peter would be very wary of Venom given their past encounters. But as Venom shows his more caring side in the adoption, Peter would start to trust him a bit. They'd have to learn to communicate, which would be difficult because of Venom's different way of thinking.
Their relationship could start with a bit of animosity. Yelena might see Peter as a naive kid at first. But as they face dangerous situations together, she starts to see his courage and intelligence. Peter, on the other hand, is initially intimidated by Yelena's tough exterior, but then comes to appreciate her loyalty and tenacity. So, gradually, they become friends who can rely on each other.
Well, it could be about Harry going through a really tough time, like dealing with intense pressure at Hogwarts. Maybe he's being bullied or facing a lot of stress from his studies or the danger that constantly surrounds him, which leads him to self - harm as an outlet for his emotional pain.
Fanfiction involving such a dark topic can be quite disturbing. I don't really recommend seeking it out as it goes against the positive essence of the character. Peter Parker is typically a symbol of hope and heroism in the Spider - Man universe.