In some fanfictions, creative liberties are taken and Natsu could potentially be reimagined as Mia. But in the original Fairy Tail, they are distinct characters.
It could change the whole dynamic of the relationships in the story. For example, his interactions with other characters like Lucy would be very different.
One possible story could be about Natsu and Mia's adventures over the 10 years. They might face powerful enemies together, with Natsu using his fire - dragon slayer magic and Mia having her own unique skills. Their friendship could grow stronger as they overcome various challenges.
In the 10 - years of this fanfiction, Natsu and Mia could be part of a prophecy. They have to fulfill certain tasks to prevent a great disaster. Their journey would be filled with self - discovery, as they learn more about their own powers and their roles in the Fairy Tail universe.
Yes, in a lot of Fairy Tail fanfiction, Natsu can be overpowered. Writers often like to amp up his powers for more exciting storylines. For example, they might give him new fire - based abilities or make his existing ones even stronger to defeat more powerful foes.
In fanfiction, Natsu's age can vary greatly. Some authors might keep him at his canonical age from the original Fairy Tail series, which is around 17 - 18 years old at the start. However, in alternate universe fanfictions, he could be older or younger depending on the plot. For example, in a time - travel based fanfic, he could be much older if the story takes place far into the future or much younger if it goes back to his childhood days.
One possible reason could be that he was wrongly accused of a serious crime within the guild. Maybe some powerful and influential members believed he was a threat and pushed for his banishment. For example, if there was a string of mysterious attacks and Natsu was framed as the culprit due to his often wild and uncontrollable nature in battle.
In such a fanfiction, Natsu might have become much stronger. Maybe he has mastered new fire - based magic techniques. He could also have new relationships within the guild, like closer friendships or even a romantic interest.
One possible aspect of a Fairy Tail Natsu and Tartaros fanfiction could be Natsu's battle against the powerful foes in Tartaros. He might face new and terrifying enemies that test his limits. His dragon slayer magic would be put to the extreme, and perhaps he discovers new powers along the way.
In fanfictions like this, the character development of Natsu within the context of Sabertooth is interesting. He could learn new magic techniques from them or teach them his own unique brand of Fairy Tail spirit. It might also explore how the different cultures of the two guilds clash or blend.