Well, perhaps in the fanfiction, Juvia could lose her water dragon slayer powers and has to go on a journey to regain them. She might encounter various challenges along the way, such as facing off against a group of dark mages who are after her power. Or she could be in a situation where she has to train an apprentice who also has the potential to be a water dragon slayer. This would involve her teaching not only the magic but also the values that come with being a dragon slayer. Also, a plot could involve Juvia being transported to a parallel universe where the rules of water dragon slaying are different, and she has to adapt quickly to survive.
One idea could be Juvia discovers a new water - based magic that only water dragon slayers can use. It gives her the ability to transform water into different forms, like crystal - like structures for defense. Another could be a time - travel plot where Juvia goes back in time and meets the first water dragon slayer and learns ancient techniques from them. And a third idea is that Juvia has to team up with other dragon slayers to defeat a powerful water - based villain who is misusing water magic and causing chaos.
Well, a cool plot might involve Natsu being transported to a parallel world where he is the only water dragon slayer. He has to adapt quickly to this new role and use his skills to fight against an evil force that is draining the water from that world. Also, he could meet alternate versions of his friends and have to convince them to trust him, since his powers are so different from what they know.
Another great Juvia Dragon Slayer fanfiction idea could be her training with an ancient dragon slayer mentor. This mentor could teach her how to control and enhance her dragon slayer powers even further. The story could explore how Juvia struggles with the intense training but also how she grows as a character and as a more powerful mage.
Power discovery is a common theme. Juvia often starts out not fully aware of her water dragon slayer powers and then has to learn about them. Another theme is friendship. As she grows as a dragon slayer, she makes new friends who support her journey.
It could be an evil water mage who was once a student of the same master as Juvia but turned to the dark side. This antagonist would be jealous of Juvia's natural talent and would try to undermine her at every turn. He might use his knowledge of water magic to create dangerous illusions or floods to harm Juvia and those she cares about.
A great plot could involve the water dragon being under the control of an evil sea god. Percy and his friends need to break the control spell on the dragon first. To do this, they have to find a magical conch shell that has the power to counter the spell. Along the way, they face many challenges from sea monsters sent by the evil god to stop them from reaching the dragon.
Maybe Gray has to team up with a dragon in order to defeat an ancient evil that threatens to destroy the world. The dragon could have its own motives and Gray has to figure out if he can trust it.
The titanium dragon slayer could be cursed. Every time they attempt to slay a dragon, they are instead inflicted with a part of the dragon's power, slowly turning them into a half - dragon, half - slayer hybrid. This transformation makes them an outcast among their own kind and forces them to reevaluate their role in the world of dragon slaying.
One idea could be that the poison dragon slayer has to overcome a rare and powerful poison - based curse that is slowly sapping their strength. They must find a mythical antidote hidden in an ancient dragon's lair.
A really interesting 'juvia water dragon slayer fanfic' is 'Juvia, the Water Dragon Slayer Queen'. It portrays Juvia as a powerful and confident dragon slayer. The story has great character development and some exciting battles. Additionally, 'Juvia's Water Dragon Slayer Legacy' is also good as it focuses on how Juvia passes on her skills to the next generation.
Maybe the Wood Dragon Slayer has a connection to the Sage of Six Paths. This connection gives them unique abilities that no one else has. They could discover this connection during a dangerous mission in an ancient ruin. And then they have to learn how to control these newfound powers while also dealing with the political unrest in the village that arises from others fearing their new strength.