Fanfic writers often draw inspiration from the relationships between characters. Captain Marvel doesn't have as many pre - established and well - loved relationships within the superhero universe as some other characters. For example, the bromance between Thor and Hulk or the complex relationship between Batman and Joker in DC. Without these kinds of engaging relationships to build on, it might be less appealing for writers to include her in their fanfics.
It could be due to the lack of understanding of Captain Marvel's character. Her backstory is quite complex and different from some traditional superheroes. If a writer doesn't fully grasp it, they may choose not to include her in their fanfic. Also, the way she was introduced in the MCU might not have resonated as much with some fans as other characters, leading to less fanfic about her.
One reason might be that they have some common experiences or interests that you don't share. For instance, if they all work in the same field and often talk about work - related stories, and you are in a different line of work.
Maybe he was blamed for some trouble he didn't actually cause. For example, if something went missing in the orphanage and the caretakers wrongly thought Naruto took it.
One reason could be to create a new and exciting dynamic. It adds a different layer to Peter's character and backstory.
One possible reason could be a sense of failure. Maybe in the fanfic, Captain Marvel fails to protect someone important in the Young Justice universe, like a young hero in training. This could lead to feelings of guilt and ultimately make him cry.
One possible plotline could be that Captain Marvel has to race against time to stop a powerful weapon from detonating. Her speed would be crucial in reaching the weapon's location before it's too late. Another could be that she uses her speed to outrun and outwit an enemy who has some sort of time - based powers.
One reason could be that the kid has different interests from the others. For example, if all the other kids in the story like sports but the kid likes art, they might feel left out during sports activities.
A different plot could be set in a post - Endgame world. Valkyrie is ruling Asgard and Captain Marvel is still out in space protecting galaxies. One day, a strange energy signal draws Captain Marvel to Asgard. Valkyrie is initially cautious but soon realizes they can work together to figure out the source of the signal. As they work together, they discover new aspects of each other and their relationship blossoms against the backdrop of a rebuilding Asgard and a changing universe.
Maybe there were personal issues in the author's life. Such as health problems or family troubles. These could have distracted the author from their work and made it difficult to focus on finishing the novel. It's common for real - life events to interfere with an author's writing schedule.
One possible reason could be mind control. Maybe an enemy has the ability to control Captain America's mind and make him turn on Spiderman. Another reason might be a misunderstanding. For example, if Spiderman was framed for a crime he didn't commit and Captain America believed the false evidence.