There could be a fanfiction where Aquarius gets trapped in the human world for an extended period. She has to adapt to living like a human while still dealing with her Celestial Spirit duties. This could involve her forming closer bonds with the Fairy Tail members than she ever had before and learning about human emotions and relationships in a whole new way.
A really interesting plot could be a time - travel fanfiction where a Fairy Tail member goes back in time and meets a younger Aquarius. This could lead to all sorts of changes in the timeline and create a really engaging story. Also, a story where Aquarius loses her powers and has to find a way to get them back with the help of the Fairy Tail guild would be exciting.
One plot idea could be exploring Aquarius's past more in - depth. Maybe a story where we see her life before she became a Celestial Spirit. Another could be a story where Aquarius has to team up with an unlikely character from Fairy Tail to save the Spirit World.
One idea could be that Aquarius gets trapped in a different dimension, and Lucy has to go on a dangerous quest to rescue her. She might have to team up with some unexpected allies from Fairy Tail. Another plot could involve Aquarius losing her memory, and Lucy has to help her regain it while also protecting her from those who would take advantage of her in this vulnerable state.
Well, a plot idea might be that a powerful wizard wants to steal Aquarius' key from Lucy. Lucy has to fight to keep it. Along the way, she discovers that Aquarius has some hidden abilities that she didn't know about before. Another idea is that there is a prophecy about Lucy and Aquarius that they must fulfill together. They initially don't believe it but as events unfold, they realize they have to work as a team to save the world.
One plot idea could be Aquarius getting lost in the human world. She accidentally gets separated from the Celestial Spirit World and has to find her way back. Along the way, she teams up with some of the Fairy Tail members who are initially skeptical of her but then realize she's not as bad as they thought. Another idea is that Aquarius discovers a hidden power within herself that she didn't know she had. This power could be related to a long - lost magic that was once prevalent in the Celestial Spirit World. It could put her in danger as there are forces that want to control this power.
Perhaps in the fanfiction, Aquarius Nuarto is sent on a special mission by the Fairy Tail guild. This mission could be to retrieve a magical artifact that has been lost underwater. Along the way, she meets new characters, some of whom become her allies and others her enemies. She uses her water - based magic skills and her wits to complete the mission.
One idea could be a new character arriving at Fairy Hills and having to adapt to the unique living situation. They could face challenges like getting along with the different personalities of the Fairy Tail mages living there.
In a 'Fairy Tail WW2 Fanfiction', a possible plot could be that the guild discovers a hidden magical dimension that is somehow connected to the events of WW2. They enter this dimension to try and stop a dark force that is influencing the war from the shadows. Some of the characters could form alliances with real - life military personnel who are open - minded enough to accept their help. This would lead to interesting interactions between the magical and non - magical worlds during the war.
One idea could be exploring how the next generation of Fairy Tail wizards handle a new dark guild threat. They might have to combine the old and new magic techniques they've learned.
One idea could be that Luffy joins the Fairy Tail guild and his rubber powers amaze everyone. He might participate in a guild - wide competition and use his unique abilities to win in unexpected ways. For example, stretching to reach far - off targets or bouncing around the arena to dodge attacks.
Maybe a mermaid in Fairy Tail fanfiction is cursed. Instead of having a beautiful voice like in traditional mermaid tales, she has a voice that causes chaos when she sings. The Fairy Tail wizards have to find a way to break the curse without sacrificing her powers. They could go on a journey to find a special artifact that can reverse the curse.
Perhaps in the fanfiction, there is a traveling burger - making wizard who comes to the Fairy Tail guild. This wizard has the ability to infuse emotions into burgers. So, a happy burger might make the eater feel extremely joyful, while a sad burger could bring out melancholy. The Fairy Tail members are intrigued by this concept and start to explore how these emotion - filled burgers could be used in their daily lives and in battles.