Adrian Toomes is a significant antagonist. He's a brilliant inventor who turns to crime to get what he wants. His Vulture suit gives him enhanced abilities and makes him a threat to the heroes.
Another theme could be secrecy and identity. Peter has to keep his identity as Spider - Man a secret, and Toomes also has his own secrets. Fanfictions might play with how they deal with each other's secrets and how it affects their relationship. For example, there could be a plot where they gradually discover each other's true selves and how that changes their bond.
Fanfiction.net could also be a place to look. However, the tagging system might not be as precise as AO3. But still, it has a vast amount of fanfiction, so it's worth a try. Just search for the specific pairing, and you may come across some interesting stories.
I'm not sure specifically as there could be many different 'toomes shoots peter' fanfictions. It might be about a conflict situation where Toomes shoots at Peter. It could be a creative take on a battle or a tense moment between these two characters in the fan - created story.
There's no way to tell for sure who Adrian is from just this title. He might be a local figure in a particular community where this 'presentacion' is taking place. Maybe he's someone known for his interesting stories or he could be a new face who has a very personal and secret story to share.
You could try searching on popular fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. Just type in the keywords 'toomes shoots peter' in their search bars and see what comes up.
Not always. While the MCU draws inspiration from the comics, there are often changes and adaptations made to fit the cinematic universe and modern audiences.