The story might develop in a way that Tony Stark realizes he made a mistake. He could start to miss the camaraderie and the combined strength of the Avengers. On the other hand, the Avengers could form a new group with a different name and mission statement. They might start to oppose Tony's actions and decisions, creating a sort of rivalry. This could lead to epic battles or intense negotiations between Tony and the new group. And in the process, both sides could learn important lessons about friendship, leadership, and the importance of working together.
Well, the other Avengers might rally around him. They could try to find a way to revive him or figure out what caused his collapse. Maybe Bruce Banner uses his scientific knowledge to run tests on Tony.
Well, his friends or colleagues might immediately rush to his aid. Pepper Potts, for example, could call for medical help. Then, the story might shift to the investigation of what caused the fainting. If it was an attack, they would start looking for the perpetrator. If it was due to overwork, his friends would probably try to make him take it easy.
Another way the story can develop is that the remaining Avengers try to win Tony back. They realize their mistakes and make efforts to reconcile with him. This could involve a lot of emotional scenes and character growth for both Tony and the other Avengers.
Often, the plot may focus on his recovery. There could be a race against time to find a cure or treatment if the bullet was poisoned or had some alien tech in it. Maybe he has to rely on some experimental medical technology that he himself had been researching but not fully developed yet.
Yes, it's possible that Tony Stark, as a character, could be the subject of Avengers fanfiction that he might 'watch' in the sense of being a character within the fictional scenarios written by fans. However, in the official Marvel universe, there's no indication of him actually reading Avengers fanfiction.
In some fanfictions, their relationship deepens as they face new challenges together. The events of the Avengers might have made them realize how much they need each other. So they become more supportive and understanding of one another. For example, Tony might be more open with Pepper about his fears and insecurities.
As he leaves, he could face challenges on his journey. Maybe some villains try to take advantage of his vulnerable state during the move. He has to use his wits and some basic tech he has with him to fend them off.
There could be a focus on his relationships. With this big change in his life, his friends and colleagues like Pepper, Rhodey, or the other Avengers might react in different ways. Some might be worried about his health, while others might be concerned about how it affects their team dynamics.
Maybe he thinks fanfiction distorts the real image of the Avengers. He's a proud and complex character who might not like how some fanfiction writers portray him or his team.
One reason could be personal growth. Tony Stark is a complex character. In fanfiction, he might leave to explore his own identity outside of the Avengers. He could be seeking self - discovery, away from the constant superhero battles and group dynamics. He might want to focus on his own technological advancements or personal relationships without the interference of the Avengers' responsibilities.