I'm not sure who exactly Natsu is just from 'natsu reads fanfiction'. It could be a normal person who just enjoys reading fan - made stories. Maybe it's a nickname for someone within a particular fan community.
It's possible that Natsu is an individual who is part of a study or research on fanfiction reading habits. So, 'natsu reads fanfiction' might be a note or a statement about this person's activity as part of a larger exploration of how people engage with fan - made literature.
In the 'natsu went mia in war fanfiction', Natsu is presumably a central or important character. He could be a hero - type figure who was expected to play a significant role in the war. It's possible that he has some special abilities or traits that made his presence crucial. Since he went MIA, the whole story might be about his friends or allies trying to find him or dealing with the aftermath of his disappearance. It could also be that Natsu is a character with a complex backstory, and his going missing in action is a key event that will unfold and reveal more about his past, his relationships, and the overall world of the fanfiction.
You can try checking out fanfiction.net. There are often some really interesting fem Natsu and Sting fanfictions there. Just search for the relevant tags and you'll be presented with a variety of stories to choose from.
He could marry an original character created specifically for the fanfiction. This character could be a powerful mage from a far - off place who crosses paths with Natsu during one of his adventures.
It could be a jealous rival from another guild. They might see Natsu as a threat and figure framing him would be a good way to get him out of the way.
One of the senior and more experienced members of the guild. They have seen a lot and know how things should be done in the guild. If Natsu acts in a way that goes against their long - established ways, they would not hesitate to berate him.
Potentially, we could see some celestial dragon characters. They might be ancient and powerful beings. Some could be friendly towards Natsu, seeing him as a new hope for their kind. Others might be more hostile, seeing him as an intruder or a threat to their traditional ways. There could also be other mages from different guilds who are either curious or envious of Natsu's situation with the celestial dragons.
Lucy could be a main character. Since she's often by Natsu's side, she would likely be deeply involved in his recovery. She could use her celestial spirit magic to try and protect him while he's injured or search for a way to heal him.
Happy, Natsu's flying cat companion, would definitely be a main character. He would be there to provide comic relief as always, but also be a source of emotional support for Natsu during his transformation into a dragon god. Erza might also be a prominent character. With her strong leadership skills and powerful magic, she could be guiding the guild during the times when Natsu is still coming to terms with his powers and the changes it brings to the guild.
Maybe we can learn Natsu's taste in writing styles. Different fanfictions have various writing styles, and by Natsu reading them, we can get an idea of what kind of writing Natsu prefers. For example, if Natsu often reads detailed and descriptive fanfictions, it might mean Natsu likes a more immersive reading experience.
One great 'Fairy Tail Natsu School' fanfiction is 'Natsu's School Days'. It's really engaging as it shows Natsu's clumsy attempts to fit into a regular school setting. The author does a wonderful job of keeping Natsu's fiery personality while also exploring how he deals with things like exams and making friends in a new environment.