You can start by looking on FanFiction.net. It has a large collection of fanfictions from various fandoms, and there are likely to be quite a few 'juvia x lucy' ones there. Just use the search bar and type in the relevant keywords.
One great 'juvia x lucy fanfiction' could be 'The Unlikely Bond'. It explores how Juvia and Lucy, who initially seem so different, gradually form a deep friendship that turns into something more. They support each other through various challenges in the magical world, and their character development is really interesting.
In some fanfictions, Juvia and Lucy could be in a situation where they have to rescue a kidnapped guild member. Juvia uses her water magic to track the kidnapper's location through the moisture in the air. Lucy uses her keys to call upon spirits that can help in combat and stealth. Along the way, they face many challenges and have heart - to - heart conversations. This experience deepens their friendship and they become closer allies within the Fairy Tail guild.
Often, in fanfiction, a common plot is that Juvia and Lucy are paired up for a task. This forced proximity makes them learn about each other. Lucy might introduce Juvia to new ways of using magic in a more creative way, while Juvia shows Lucy how to be more in tune with her emotions. As they face difficulties together during the task, they build a bond of trust. This trust then evolves into a deep friendship where they are always there for each other, whether it's cheering each other on during a magic competition or comforting each other after a loss.
There are so many fanfictions out there, and it can be a bit of a hunt to find a great 'Juvia x Natsu pregnancy fanfiction'. Some things to keep in mind are the writing style of the author. If you prefer more descriptive and emotional writing, look for stories that are praised for their prose. Also, check if the plot makes sense within the context of the 'Fairy Tail' universe, since Juvia and Natsu are characters from it. It might take some time to sift through, but with a bit of patience, you could find a really interesting one.
The theme of adventure is also common. Fanfictions often put Juvia and Sting in situations where they have to embark on quests or fight enemies together. This not only tests their relationship but also allows for their bond to strengthen as they rely on each other in dangerous situations. It also gives the author a chance to explore the magical abilities of both characters in different scenarios.
Gray could be a great addition. Since Gray has a history with both Juvia and Lyon, his presence can add a lot of drama. For instance, his reaction to Juvia and Lyon getting closer could range from jealousy to acceptance, which would create different story arcs.
A theme that often appears is the idea of redemption or self - discovery within their relationship. Lyon may have his own past mistakes or insecurities that he overcomes through his relationship with Juvia. And Juvia, who has always been a bit of an outcast in terms of her overly - intense emotions, might find a more balanced and healthy relationship with Lyon. This can be a really interesting aspect of Lyon x Juvia fanfictions as it delves deeper into their characters.
One interesting plot could be Juvia and Lyon going on a magical adventure together to find a lost artifact. They might face various challenges along the way that test their skills and relationship.