Peter would likely be defiant. He has a strong moral compass and wouldn't easily give in to Osborn's demands. He'd probably try to find a way to escape right away, using his spider - abilities like climbing walls and his super strength to break free from any restraints.
Well, one possibility is that Spider - Man's friends, like Ned and MJ, would quickly realize he's missing. They might start their own investigation, using Ned's tech - savvy skills to try and track Peter. Maybe they'd find some clues that lead them to one of Osborn's secret lairs. Another thing could be that Peter manages to break free on his own using his spider - powers and his wits. He could then turn the tables on Osborn and expose his evil plans to the public.
One idea could be a story where Peter tries to protect Harry from the darker aspects of their world. Since Peter has his Spider - Man powers, he could be constantly on guard to keep Harry safe, perhaps from the enemies he made as Spider - Man. For example, a villain might target Harry to get to Peter.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfictions, and you can easily search for Peter Parker and Harry Osborn stories using the search bar. Just type in their names and you'll get a list of relevant fanfictions.
There's also 'Friendship Forged in Crisis' which is an amazing Peter Parker and Harry Osborn fanfiction. It focuses on a major crisis in the city where they have to rely on each other completely. The story has a lot of action and also some really touching moments between the two characters that really bring out the essence of their friendship.
Well, in 'Peter Parker x Harry Osborn fanfiction', a common theme is the struggle between good and evil. Harry sometimes has his own inner demons and Peter tries to help him. Also, the theme of self - discovery is often present. As they interact, they both learn more about themselves. For instance, in some fics, Harry discovers new aspects of his personality through his relationship with Peter. And in others, Peter realizes things about himself that he hadn't before. It's all about how their relationship affects their individual growth.
One common theme is the struggle between friendship and a deeper romantic/sexual relationship. Given their long - standing friendship in the original stories, fanfiction often explores how that transitions into something more in a yaoi context.
There could be a fanfiction where Peter Parker and Norman Osborn have to team up to face a greater threat than either of them has ever faced. This forces them to put aside their differences. They might start to understand each other better during this adventure, and it could change their relationship forever.
One interesting plot could be that Peter and Harry discover a parallel universe where their roles are reversed. Harry is the one with superpowers in that universe, and Peter is just a normal person. They could explore how this affects their relationship and what they can learn from each other's experiences in their respective universes.
Mentorship is also a theme sometimes. Norman, with his experience and knowledge, could potentially be a mentor to Peter in some fanfictions, despite their differences. And there's the theme of secrecy. How they keep their relationship (whatever form it takes) a secret from the rest of the world and the consequences of that secrecy.