In some fanfictions, there might be a plot where Juvia gets into trouble and Natsu has to rescue her. Since Natsu is always so brave and Juvia is not exactly weak but can find herself in sticky situations. This could lead to some heart - warming moments of friendship or even the start of a different kind of relationship between them.
One interesting plotline could be Natsu and Juvia teaming up for a difficult mission. They have different magic styles, Natsu with his fire magic and Juvia with her water magic. Their interaction during the mission, like Juvia being a bit shy around Natsu at first but then growing more confident as they face challenges together, can make for a great story.
One unique plotline is where Juvia and Natsu accidentally swap magic powers. This leads to a lot of chaos as Juvia tries to control Natsu's fire magic and Natsu struggles with Juvia's water magic. They have to learn to adapt quickly to this new situation while also dealing with the threats that come their way.
One idea could be a story where Natsu and Juvia team up for a mission. They initially clash because of their different personalities, Natsu being hot - headed and Juvia being more reserved and love - stricken for Gray. But as the mission progresses, they start to understand and respect each other's strengths, and form a strong friendship. For example, Natsu could learn about Juvia's water magic and how she can use it in creative ways, and Juvia could be impressed by Natsu's determination and never - give - up attitude.
One plot idea could be that Natsu and Juvia are on a mission together in a mysterious, ice - covered land. Juvia's water magic is affected by the extreme cold, and Natsu has to use his fire magic to keep her safe while they search for a powerful, lost artifact. Along the way, they start to understand each other better and develop a deeper bond.
One plot idea could be that Juvia and Natsu are forced to team up on a mission in a dangerous, enchanted forest. Along the way, Juvia's feelings for Gray start to shift towards Natsu as she sees his determination and kindness in a new light. Another could be a body - swap situation where Juvia and Natsu swap bodies and have to learn to deal with each other's powers and personalities, leading to some comical and heartwarming moments. A third idea is that in an alternate universe, Juvia and Natsu are childhood friends, and they have to face the challenges of growing up and protecting their world together, with their relationship evolving from friendship to something more romantic.
One interesting plotline could be Natsu coming back with new and powerful magic. For example, he might have learned some ancient spells during his time away. Another could be his reunions with the various members of Fairy Tail. He would have emotional moments with Lucy, Happy, and the others, reminiscing about old times and looking forward to new adventures together.
One interesting plotline could be Natsu discovering new dragon powers that are unique to him. This could lead to him having to learn how to control these powers and facing challenges within the Fairy Tail guild as others may be wary or envious of his new abilities.
A really interesting fanfiction is 'Juvia, Natsu and the Lost Magic'. Here, Juvia and Natsu are on a quest to find a lost magic. Along the way, they encounter many challenges. Juvia's water - based magic and Natsu's fire magic create some really cool and unique battle scenes. The story also has a sub - plot about their friendship growing stronger, and how they come to rely on each other in ways they never expected.
Well, they could have an interaction where Natsu accidentally sets off Juvia's temper. Maybe Natsu accidentally melts some of Juvia's precious water - made items. Juvia gets mad, but Natsu's cluelessness about how much he's upset her is kind of endearing. Eventually, Juvia forgives him when she sees how he was just being his usual, careless self.
One possible plotline could be Natsu turning dark due to some external dark magic influence and his journey to regain his former self while away from Fairy Tail. Maybe he teams up with some unexpected allies.
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.