In this kind of fanfiction, Natsu might have some really interesting interactions. He could try to warn his past self about future challenges or mistakes. For example, he might tell his younger self about a particularly difficult battle and how to better prepare for it.
Another possibility is that Natsu's meeting with his past self could cause some sort of time - related chaos. His past self could be tempted to change things based on what the future Natsu tells him, which could then have unforeseen consequences for the future that Natsu knows.
Perhaps he would be shocked at how naive his past self was. And his past self could be in awe of what he has become in the future. They might even have a bit of a friendly sparring match to see how much Natsu has grown in terms of his fighting skills.
In the 'natsu meets his future self fanfiction', one possibility is that his future self warns him about certain events that are going to happen. For example, about an upcoming battle that is more dangerous than any he has faced before. His future self could also show Natsu new magic techniques that he will develop over time. It could also be a situation where Natsu's future self is not what he expected, perhaps having made some mistakes that Natsu now has the chance to avoid.
They could also have a philosophical discussion. Past Kratos has a lot of unresolved issues, especially regarding his past deeds. Future Kratos, having had more time to think about it all, could share his insights. For example, he might talk about how he has come to terms with his past and how past Kratos can start that journey too. This encounter could be a turning point for past Kratos's character development.
In the fanfiction, when Sasuke meets his past self, he might try to change the past. He could warn his younger self about the mistakes he made, like leaving the village and seeking revenge blindly. This encounter could be a chance for him to rewrite his own history and avoid all the pain and suffering he went through.
The fanfiction might start with Natsu's search for his mother. When they meet, there could be some initial shock or disbelief. His mother could look at him with great love and pride. They might have a long conversation about his life so far, his friends, and his adventures. She could also introduce him to parts of his heritage that he was previously unaware of, which could shape his future actions and decisions in the story.
In the 'natsu meets his parents fanfiction', Natsu may initially be in shock when he meets them. His parents could look exactly like him or have some unique features. They might take him on a journey to a place that was important to their family. Along the way, Natsu could learn valuable lessons about family, love and self - discovery.
One possibility is that Ichigo could try to change certain events in his past. For example, he might want to prevent a tragedy that occurred or give himself some advice that would make his journey easier. He could also end up causing more chaos if he interferes too much, as small changes in the past can have big consequences in the future.
Well, it could start with Natsu accidentally stumbling upon a time - related magic or a magical artifact that transports him to the time when his past self exists. Then they would meet and there would be a moment of shock and confusion.
In this fanfiction, Percy might be shocked at first to see his younger self. He could offer advice to his younger version, like how to better handle the challenges in the magical world. Maybe he'd warn his younger self about certain enemies or mistakes he made in the past.
In this 'Naruto meets his female self' fanfiction scenario, it could be that his female self has a different personality. She might be more in touch with her emotions. They could initially clash because Naruto is used to his own way of doing things. But then they might learn from each other. For example, Naruto could learn how to better handle his relationships from his female self, while she could learn his fearless attitude in battle.
In this fanfiction, Steven could learn valuable lessons from his future self. For example, he might find out how to better use his powers or how to handle difficult situations with the Crystal Gems. Maybe his future self would warn him about upcoming threats and how to avoid them.