I think Uraraka would be very excited. She has always been a big supporter of Deku. Meeting Future Deku would give her a chance to see how far he has come, and she might also get some inspiration for her own hero journey. Plus, she's a friendly and emotional character, so she'd likely be thrilled at the opportunity.
Maybe in this fanfiction, Class 1 - A is on a training mission when they accidentally stumble into a time - warp and meet Future Deku. Future Deku could be a super - powerful hero, and he starts to train them in advanced techniques that they haven't learned yet. He might also share some of his future experiences with them, like the battles he has won and the villains he has faced, which would inspire Class 1 - A to strive harder in their hero training.
In 'deku meets future deku fanfiction', perhaps the future Deku warns the present one about upcoming threats. He could tell him about villains he'll face in the future and how to defeat them. This would give the present Deku an edge in his battles and also in his growth as a hero.
Another possibility is that a new villain emerges as a result of the time - travel or whatever mechanism brings future Deku to the present. This villain could be from a future where Deku's actions (or inactions) have led to a more dangerous world, and he travels back in time to stop Deku from making those mistakes again. However, his methods are extreme and dangerous, making him the antagonist of the story.
Well, one thing that could happen is that Class 1a would be in for a huge shock. They've known Deku as a hero - in - training. Meeting him as a villain would completely shatter their perception. They might initially try to reason with him, thinking there's some misunderstanding. Maybe Bakugo would be the most conflicted, given their long - standing relationship.
Bakugo would likely be furious. He'd feel betrayed and would probably be the first to attack Deku, yelling at him about how he's thrown away everything they've worked for. Uraraka might be more empathetic. She'd try to understand what drove Deku to become a villain and hope there's a way to bring him back to the side of good.
You can start by looking on fanfiction platforms like Archive of Our Own (AO3). It has a large collection of My Hero Academia fanfictions, and you're likely to find some great 'class 1a meets manga deku' ones there.
There's also 'When Class 1a Meets Manga Deku'. This fanfiction focuses on how the students of class 1a react to a Deku who has all the powers and abilities as depicted in the manga. It shows their initial shock, followed by their attempts to work together with this new version of Deku. The story also delves into the relationships between the classmates as they face various challenges.
Maybe in this fanfiction, the class 1a students from the present time travel to the future and meet an older, more mature Bakugou. He could be a pro - hero now, and they are amazed by how much he has changed and grown. He might show them some new and powerful moves that he has developed over the years.
Well, he might learn about his future achievements. For example, he could find out if he becomes the greatest hero. Maybe his future self gives him some advice on how to deal with upcoming villains more effectively.