One idea could be to explore an alternate ending for a particular arc. For example, in the Tartaros arc, what if Natsu and the others had to face a more powerful version of Mard Geer? Another idea is to focus on the backstories of minor characters during an arc. Maybe tell the story of how a random guild member got involved in the events of the Grand Magic Games arc. Also, a time - travel fanfiction set within a Fairy Tail arc could be cool, like if a character went back to the Tower of Heaven arc and changed some key events.
One interesting fanfiction could be one that focuses on Daphne's backstory before the arc. It might explore her motives and how she came to be the character she is in the arc.
The unique combination of two different universes. 'Fairy Tail' is a world of magic and guilds, while 'Avatar' has its own system of bending elements. When you mix Gray from 'Fairy Tail' into the 'Avatar' concept, it creates a whole new set of possibilities for stories.
One great 'Fairy Tail Gray Avatar' fanfiction is 'Gray's New Element'. It combines Gray's ice - making abilities from 'Fairy Tail' with the concept of bending from 'Avatar'. The story has an interesting plot where Gray discovers he can also control water in a new way, like waterbenders in 'Avatar'.
One interesting concept could be the combination of magic from Fairy Tail and the bending abilities in Avatar. For example, a character might use Fire Magic in the style of Firebending, creating new and powerful attacks. Another concept could be the crossover of characters' personalities. A Fairy Tail character might be placed in the Avatar world and have to adapt to their cultural values, like Natsu having to learn about the importance of balance in the four nations.
Natsu is often a popular character. His brash and energetic personality can create some really interesting scenarios in the Avatar world. He might try to take on powerful benders with his Fire Magic. Another popular one is Erza. Her strong - willed and disciplined nature would make her adapt well to the challenges in the Avatar world, and she could be a great leader in a guild - like setting there.
First, decide which arc you want to base your fanfiction on. Then, make a list of the main events and characters in that arc. For example, if you choose the Edolas arc, list out the characters like Natsu, Lucy, and Happy, and the events like the journey to Edolas and the fight against Faust. Next, think about what you want to change or add to the arc. Maybe you want to add a new character or a new sub - plot. After that, start writing an outline of your story, including the beginning, middle, and end.
For a Fairy Tail Tartaros Arc fanfiction, you might consider writing about a new magic that is introduced during the arc. It could be a magic that is a combination of different existing magics in the Fairy Tail universe. The story could revolve around a young wizard who discovers this new magic and uses it to turn the tide in the battle against Tartaros. You could also explore how the discovery of this new magic affects the power dynamics within the guild and among the other characters in the arc.
One interesting aspect could be the different versions of the characters. In Edolas, the characters often have different personalities or abilities. For example, the way Natsu behaves in Edolas might be a unique take on his character. It can show how the original character could have developed differently in an alternate world.
Lucy is another popular choice. In the Edolas arc, her intelligence and determination can shine through. Maybe she's the one who figures out how to navigate the strange new world and its magic, and her relationships with the Edolas versions of the characters can be explored in interesting ways.