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.
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.
A possible plot could be that Gajeel and Levy go on a journey to find a special place to raise their child. Along the way, they encounter old enemies who now see the pregnant Levy as an easy target. But they fight together, with Gajeel being extra protective. Also, they could have different ideas about parenting. Levy might want a more studious and peaceful upbringing for the baby, while Gajeel wants to train the baby to be tough from a young age. They then have to find a middle ground.
One idea could be that Levy discovers she's pregnant during a big guild mission. This could add a whole new layer of tension as Gajeel becomes overly protective. Maybe they have to face an enemy who specifically targets Levy because of her pregnancy. Another plot could involve Levy struggling with the changes in her body and magic while pregnant, and Gajeel having to learn how to support her in ways he never thought possible.
The other members of Fairy Tail would likely be very excited. Natsu might be a bit clueless at first but would soon be happy for them. Lucy would probably be super excited and offer to help Levy with anything she needs. Erza would be more reserved in her excitement but would offer her protection. Gray would probably make some teasing remarks to Gajeel about becoming a father.
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.
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.
In a Gajeel and Levy family fanfiction, it could be about how they handle family traditions. Levy might be from a family with a strong tradition of book - keeping magic knowledge. She could be trying to pass this on to their children, while Gajeel, with his more rough - around - the - edges background, has to adjust to these new family values.
In many fanfictions, a common storyline is Gajeel finally confessing his feelings to Levy. It could be a really heart - warming moment, especially after a lot of build - up where they've been friends for a long time but both have unspoken feelings. Sometimes, there are also stories where they get into an argument that tests their relationship, but they always come out stronger in the end.