It could reveal a lot. For example, we might learn about his early relationships, like with Igneel. Maybe we'd see how he developed his love for fighting and his loyalty to Fairy Tail. It could also show his struggles as a young dragon slayer, which would give us a deeper understanding of his current personality.
Perhaps the Fairy Tail members watching will have different reactions. Some might be worried for Natsu, especially those who are close to him like Lucy or Happy. Others, like Erza, might be more focused on analyzing Natsu's moves and Zero's counter - attacks. And there could be some comic relief from the likes of Gray, making snarky comments while still being engaged in the fight between Natsu and Zero.
The fanfiction can create new plotlines. If it reveals something unexpected about Natsu's past, like a connection to a dark magic or a hidden enemy, it could lead to new adventures and conflicts within the Fairy Tail universe. It might also change the way other characters view Natsu, leading to different interactions.
In this fanfiction scenario, one possible thing that could happen is that Natsu's determination to defeat Zeref might be put to the ultimate test. Natsu has always been a fighter with a strong will, and facing Zeref, he would have to dig deep. Zeref, on the other hand, being extremely powerful, might initially have the upper hand. But Natsu could tap into some hidden power, perhaps related to his dragon slayer magic in a new and unexpected way. Maybe he would get some kind of emotional boost from his friends in Fairy Tail who are watching, which gives him the edge he needs to turn the battle around.
Fanfiction about 'Fairy Tail' watching the past could involve the characters using some sort of magic or device to view their own past events or the history of their guild. It might show how they react to seeing their former selves, old relationships, and past mistakes.
I haven't read this particular fanfiction yet. But generally, in a scenario where Fairy Tail characters watch Natsu fight Zeref, it could be filled with intense emotions. Natsu's determination and his unique powers would be on full display. And the reactions of the other Fairy Tail members would add depth to the story, whether it's shock, pride, or worry.
Well, in 'Fairy Tail Watches Natsu Fight Fanfiction', it might be interesting to see how the author builds up the tension before the fight. They could show Natsu's pre - fight rituals or his mental state in a new light. Also, the reactions of the other Fairy Tail members during the fight can add a lot of depth. For example, if Lucy is worried about Natsu but also has faith in him, that kind of emotional interplay can be really engaging.
One common plotline could be Natsu going on a solo adventure that the other Fairy Tail members watch through some magical means. Maybe he discovers a new type of magic that is both dangerous and alluring. Another could be Natsu facing a version of himself from an alternate timeline, and the guild watches as he battles his other self to save the world.
Erza would likely have a more serious take on it. If the fanfiction adheres to the values of Fairy Tail and portrays Natsu in a positive light that aligns with his character in the guild, she would probably approve. However, if it contains any inappropriate or un - Fairy Tail - like behavior, she would surely be against it.
Mirajane is a popular choice too. She has a mysterious side to her, and in the fanfictions, she could use her unique abilities to help Natsu or be involved in the events that the Fairy Tail members are watching. Also, Laxus might be included. His powerful magic and complex character can add depth to the fanfiction stories, especially when his relationship with Natsu and the rest of the guild is explored.
It could be about Natsu having left Fairy Tail for some reason and then reuniting with the guild in a very unexpected way. Maybe he has new powers or a different outlook on life that causes some friction and also some amazing moments of reunion and growth within the guild.