Perhaps a fanfiction where Gajeel is cursed with a blue mark that slowly drains his energy. Levy, being the studious mage she is, devotes all her time to finding a cure. Along the way, they have to face many enemies who are after Gajeel's power. Their love and friendship are put to the test as they struggle to break the curse.
A lemon fanfic about Gajeel and Levy in Fairy Tail often explores their relationship in a more romantic or spicy way. It might include their growing feelings for each other, with some added elements of passion. However, it's important to note that such fanfics are not part of the official canon.
I recommend 'Gajeel and Levy: A New Chapter'. This fanfiction takes place after a big event in the Fairy Tail world. It shows how they start a new phase in their relationship, like moving in together or starting a joint project within the guild. 'The Levy - Gajeel Love Story' is also quite good. It's a more traditional love story - type of fanfiction that details their courtship and how they deal with the opinions of their friends in the guild. And 'Gajeel's Protection of Levy' is a fanfiction that emphasizes Gajeel's protective side towards Levy. It has some exciting plot twists where Gajeel has to save Levy from various threats.
In fanfiction, Gajeel and Levy's love is often depicted as a slow - burn relationship. Gajeel's rough exterior gradually softens as he gets closer to Levy. Their shared experiences in Fairy Tail, like going on missions together, create a bond. Levy, with her intelligence and kind heart, sees past Gajeel's tough facade. In many fanfictions, their love story is filled with moments of mutual understanding and support.
You can expect a focus on the relationship between Gajeel and Levy. It might have some romantic and steamy scenes that deviate from the typical Fairy Tail plot.
There are fanfictions that focus on the power dynamics between Gajeel and Levy. Gajeel is a strong and physically powerful wizard, while Levy is more of an intellectual with her script magic. Some stories explore how they complement each other in battles and how this affects their relationship. And of course, there are those that simply focus on their romantic moments, like dates, confessions, and how they deal with jealousy within the relationship.
One popular storyline is where Levy and Gajeel go on a dangerous mission together. They face powerful enemies and have to rely on each other's strengths. Their relationship deepens as they overcome challenges. Another is a more comical one where they try to adapt to living together in the guild hall and all the chaos that ensues.
Their relationship would likely become more protective. Gajeel would be constantly on guard to keep Levy and the unborn baby safe. He'd be more gentle and caring towards her.
One popular theme is their relationship growth. Many fanfictions focus on how they overcome their initial differences. Gajeel was once a rough character, and Levy was more gentle. Their journey from acquaintances to lovers is often explored. Another theme could be adventures they might have together that are not shown in the original series. For example, they could go on a quest to find a rare book for Levy's research while facing various challenges along the way. Also, some fanfictions might center around how they support each other in tough times within the Fairy Tail guild, like when the guild is under attack and they have to rely on each other's strengths.
There could be a fanfiction where Gajeel is turned into a blue dragon temporarily. Levy has to take care of him in this state. It would be a cute and funny story as Gajeel tries to communicate in his dragon form and Levy tries to understand him. Also, they might face some threats from those who want to capture the blue dragon.