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.
One interesting Fairy Tail Levy fanfiction could be 'Levy's Adventure in the Forbidden Library'. It might explore Levy's love for books and her discovery of a long - lost magical tome. Another could be 'Levy and the Mysterious Guild Member' where she forms an unexpected bond with a new character in the guild.
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.
Gajeel could be a great character to pair with Levy. Their relationship has always had an interesting dynamic, with Gajeel starting off as a bit of a rough character and Levy being more gentle and studious. Another option could be Lucy. They are both female members of the guild and could have a story together where they go on an adventure and use their different skills to overcome obstacles.
It can show her vulnerability. Levy is usually seen as a smart and capable mage in Fairy Tail. But in an embarrassing naked situation, her confidence might be shaken, revealing her more vulnerable side. For instance, she may become shy and reserved, which is different from her normal assertive self when dealing with books and knowledge.
There's 'A New Chapter for Gajeel and Levy'. This fanfic focuses on their post - series life. It shows how they grow as a couple and face new challenges together. It also includes some really cool action scenes where Gajeel and Levy team up against new threats.