It could involve Erza facing challenges in the Edolas version of Fairy Tail. Maybe she has to deal with different versions of her friends or new magical threats specific to that realm.
In this fanfiction, it might center around a great adventure. Erza could be on a quest to restore something in Edolas that has been disrupted. Along the way, she meets the Edolas Fairy Tail members. There could be a lot of action scenes as she battles foes using her signature combat skills. Also, there could be some emotional moments as she bonds with the new characters she meets, sharing her own experiences from her world while learning about theirs.
Well, perhaps in this fanfiction, Erza from the normal Fairy Tail is transported to Edolas. She might struggle to adapt to the differences in magic there. For example, the way magic is used and the power levels could be very different. And she would surely encounter her Edolas counterparts of the guild members, which could lead to some really interesting interactions, like misunderstandings or alliances formed out of necessity.
It could be one of the powerful Edolas officials who oppose Erza's presence or her mission.
Perhaps the fanfiction could start with Jellal proposing to Erza in a very romantic way, like on top of a mountain overlooking a beautiful sunset. Then, the preparations for the wedding could be filled with some comical moments, like Natsu trying to help with the decorations but making a mess. After they get married, they might go on a honeymoon to a far - off land, where they encounter some old enemies who are now reformed and they all work together to solve a new mystery in that land. The fanfiction could end with them coming back to Fairy Tail stronger than ever and ready to face whatever comes next as a married couple.
One possible plot could be that Natsu and Erza leave Fairy Tail due to some kind of internal conflict within the guild. Maybe there are differences in opinions regarding how the guild should be run or what kind of jobs they should take. So they decide to set out on their own journey to find a new purpose.
One idea could be that Erza and Kagura team up for a mission that involves an ancient magic artifact. They start off not getting along well because of their different guilds' rivalries in the past. But as they face various challenges during the mission, like powerful dark mages trying to steal the artifact from them, they gradually learn to respect each other's skills. They combine their combat styles, Erza's requip magic and Kagura's swordsmanship, to defeat the enemies and in the end, they become friends and vow to work together in the future for the greater good of the magical world.
One possible interesting plot point in 'Fairy Tail Back to Edolas Fanfiction' is the exploration of the cultural differences between Earth - land (the regular Fairy Tail world) and Edolas. The characters might have to adapt to new customs and ways of life. This could lead to some really funny or heartwarming moments as they struggle to fit in while also trying to achieve their goals.
One idea could be a story where characters from Earthland are accidentally transported to Edolas in a reversed situation. They could struggle to adapt to the different magic rules and social structures there. For example, Natsu might find that his fire magic works in a completely different way in Edolas, leading to some comical and challenging situations as he tries to figure it out.
In this fanfiction, the ghastly space might be a place where the laws of magic are reversed. Erza and Lucy enter it accidentally. Erza's physical strength becomes a liability as it attracts dangerous energy blasts, and Lucy's celestial spirits are summoned in reverse order, causing chaos. They first struggle to understand what's going on. But then they realize that they need to work together in a completely different way. They start to experiment with their magic, combining it in ways they never thought of before. For example, Erza uses her sword as a conduit for Lucy's celestial magic. Eventually, they find a way to reverse the magic reversal and escape the ghastly space, having grown as mages and friends.
One idea could be exploring the backstories of the Edolas versions of the main Fairy Tail characters in more detail. For example, how did Edolas Natsu become the way he is? Another idea is to create a story where the Fairy Tail guild from Earth - land has to team up with their Edolas counterparts to fight a common, powerful enemy that threatens both worlds. Maybe a new, dark magic has emerged that only the combined strength of both guilds can combat.
One key element is the contrast between the two worlds. Edolas has its own unique magic and society, and seeing how the characters from there react to Fairy Tail's more chaotic and emotional world is really interesting.
The plot could start with Erza feeling like she needs a change. She's been through so much, and her long hair has always been a part of her identity. But she decides it's time for something new. She goes to a local barber in Magnolia and gets a haircut. Her new look causes a stir in the guild. Some of the younger members look up to her even more for her boldness, while some of the older members are a bit taken aback. As the story progresses, Erza finds that her new haircut gives her a different kind of confidence. She takes on tougher missions and even inspires other female members of the guild to make changes in their own lives.