One possible plot could be that Natsu sacrifices himself to save his friends from a powerful dark magic. He might use all his power to defeat an ultimate evil, but in doing so, it drains his life force. Another plot could be a tragic accident during a mission where Natsu is caught in a powerful spell that he can't escape from and it ultimately takes his life. And perhaps there could be a situation where he is poisoned by a very rare and deadly substance that no one can cure in time.
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.
Well, for Lucy, she would feel like she lost a part of herself. Natsu was always there for her, and his death would leave a huge void. Gray, who has been Natsu's rival and friend, would have his world shaken. He might even question his own strength and purpose. Erza would be in deep pain, but she would also try to hold the guild together. The younger members of Fairy Tail would look at Natsu's death as a great loss and it could change their view of the guild's missions. They would become more cautious or more determined depending on their personalities. Overall, the guild's dynamic would be severely disrupted.
Often, it could be because of a false accusation. Maybe someone framed Natsu for a crime he didn't commit, like stealing a powerful magical artifact from the guild. So, to maintain peace and order, the guild leaders had no choice but to banish him.
Lucy could be a main character. She was always close to Natsu in the original Fairy Tail. So when Natsu returns as an 'ex' and meets the guild again, she would likely play a big role in how he is received and in the development of the story.
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.
One great fanfiction that delves into Natsu's memories might be titled 'Natsu's Hidden Past'. In it, the author could explore his early days in Fairy Tail, his relationship with Igneel, and how those experiences shaped the person he is today. It might show how he learned to control his dragon slayer magic and the friendships he formed along the way.
There might be. 'Fairy Tail' has a large fan base, and many fans enjoy creating fanfiction. Natsu, with his fiery personality and combat skills, could be an interesting Mandalorian in a fan - made story. It would be cool to see how his magic would interact with the Mandalorian technology and culture. However, I'm not sure exactly how many of such fanfictions exist, but it's definitely a concept that could work well.