Black Widow might be a bit more guarded. She would see her past self as a symbol of her past life full of secrets and danger. She could try to protect her past self from knowing too much about the future to avoid changing the timeline in a bad way. She might also feel a sense of melancholy seeing how far she has come and all the things she has been through.
Thor would likely be quite boisterous. He might be amused by his past self's less - experienced ways. At the same time, he could also be a bit envious of his past self's more carefree attitude before all the losses he has endured.
Captain America would probably be very reflective. He might see his past self as a reminder of his long journey and how much he has changed. He could try to offer some words of wisdom to his younger self.
Their interaction would be very interesting. They would probably be very curious about each other. The present - day BTS might want to give advice to their past selves, like how to deal with stress better during their early days.
There would be a mix of reactions. Tony Stark, being the confident and curious type, would probably start asking a million questions right away. He'd want to know about new inventions, future threats, and how he can improve things in the present. Meanwhile, Hawkeye might be more cautious. He'd be observing his future self closely, looking for signs of danger or changes in his personality. And then there's Captain America, who would likely approach the situation with a sense of duty. He'd be thinking about how this meeting could help or harm the world and the Avengers as a whole. Overall, it depends on the character's personality and what they value most.
A possible plot could be that the meeting causes some sort of time rift. The Avengers then have to fix this rift while also dealing with the differences between their present and past selves. Their past selves might be more naive or idealistic in some ways, which could lead to both comical and tense situations.
The answer to the question that humans would travel to the past and meet their past selves in the future was not absolute because there was no scientific evidence to prove this. However, according to some novels and science fiction works, humans might encounter their past selves in the future, but this depended on many factors such as whether the technology of time travel was available, whether the time they traveled to the past was close enough to their past selves, and so on. In some novels, humans travel back in time to meet their past selves. These plots often involve some mysterious scientific principles such as "time tunnel" or "time warp", which may allow humans to travel through time and meet their past selves. But in reality, we currently have no scientific evidence to prove this possibility. In short, it was still unknown whether the future could travel to the past and meet the past. More scientific research and evidence were needed to confirm it.
Ryosuke would likely analyze the situation. He'd study his past self to see how he could have improved even more in the past. He might be a bit critical at first, but then realize that his past self was on the right track and that all the experiences he had, both good and bad, led him to become the racer he is in the present. He might also be curious about how his past self would react to his current racing skills and knowledge.
Well, they might be shocked at how far they've come. Maybe their past selves would be in awe of their current achievements. For example, seeing the huge stadiums they now perform in compared to the small practice rooms in the past.
Some shadowhunters might be in disbelief at first. They would think it's some kind of trick or dark magic. Others could be excited, seeing it as a chance to peek into their own future. For instance, if a young and ambitious shadowhunter meets their successful future self, they would be eager to learn how they achieved that success.
Well, they might be shocked at first. Maybe their future selves have new powers or have faced some great losses that changed them. Their future selves could also give them warnings about upcoming threats that they'll face in the future.
Both of them might also feel a sense of unease. Seeing a version of themselves from the future could make them realize how much they are changing and how uncertain their future really is. It could also make them question their current identities and goals. They might start to have an internal struggle as they try to reconcile their present selves with the potential future versions they are seeing.
The main characters in the 'httyd meet their future selves fanfic' would be those who are crucial to the story of Berk. Hiccup, as the protagonist, is a given. Toothless, his dragon companion, is also essential. Astrid, being Hiccup's love interest and a strong warrior in her own right, would be there. And then there are the other members of the Dragon Riders like Fishlegs, who is known for his knowledge, Snotlout, who is full of bravado, and the Twins, who bring their unique brand of humor and chaos. All of them together form the core of the How to Train Your Dragon universe and would be the main characters in this fanfic.