Perhaps in the fanfiction, the pregnancy is a result of some sort of magical accident or spell gone wrong. Gray and Lucy then have to figure out how to deal with the unexpected situation while also keeping it a secret from their enemies. They could start preparing a safe place for the baby within the guild's hidden chambers.
One idea could be that Lucy discovers she's pregnant during a difficult time in the magical world. Gray is initially shocked but then becomes very protective. They might face challenges from their guild mates who are worried about how this will affect their ability to go on missions.
One idea could be that they face challenges in preparing for the baby, like finding a suitable home. Maybe they have to deal with family reactions, both positive and negative. Another could be that during the pregnancy, they discover new things about each other's pasts.
The plot could involve Gray and Lucy dealing with the challenges of pregnancy. For example, Lucy might have a difficult pregnancy with some health scares. Gray would be by her side, using his ice magic to keep her cool during hot flashes. Their friends might be concerned and offer different kinds of support. In the end, they welcome a healthy baby into the world.
Gray and Lucy's pregnancy could be a beautiful journey. One day, Lucy discovers she's pregnant. Gray is initially shocked but then filled with joy. They start preparing a small nursery in their home. Gray paints the walls blue while Lucy arranges the baby furniture. Their friends from Fairy Tail are excited too, constantly bringing gifts and offering help.
It's quite possible that there is such a fanfiction. Fanfiction thrives on exploring different relationships and storylines that may not be part of the original canon. Given the popularity of the characters Lucy and Sting, some fans might have been inspired to write a story where Lucy is pregnant with Sting's child. You could also try reaching out to fellow fans on social media platforms dedicated to the relevant fandom to ask if they've come across such a fanfiction.
One idea could be that Rogue discovers Lucy is pregnant and is initially in shock but then becomes extremely protective. He might start learning about how to take care of a pregnant woman and the coming baby. For example, he could read books on pregnancy and baby care in secret.
Maybe the story could focus on Lucy's journey during the pregnancy. She could be dealing with morning sickness and hormonal changes while Gray is away on some important mission. This could lead to some misunderstandings between them, but in the end, they come closer together when Gray realizes how much Lucy needs him.
Well, it could start with Gray and Lucy being on a really dangerous mission together. In the midst of all the chaos and life - threatening situations, their emotions run high and they end up getting closer than they ever thought. Later, Lucy discovers she's pregnant. Gray then has to step up and be more responsible. They might face challenges like financial difficulties as they prepare for the baby. And there could be a sub - plot where they search for a safe place to raise their child away from the constant danger of their guild life.
Erza could be a great supporting character. She might offer her strength and protection to Lucy during the pregnancy. Natsu could also be there, being his usual boisterous self but also showing a caring side towards the expecting couple.
Lucy's pregnancy could make Gray realize just how much he truly loves her. He might become more possessive in a protective way, which could be both good and bad for their relationship. On one hand, Lucy would feel very loved and cared for, but on the other hand, it could lead to some arguments if he becomes overbearing. But overall, the experience would likely deepen their bond.
Well, a possible plot is that there are some dark forces that target Lucy because of her unborn child. Maybe they believe the baby will have some special powers. Laxus then has to go on a journey to find a way to protect them. And as for their relationship, it could be strained at first because of the stress, but they gradually grow closer as they face the challenges together. Plus, there could be a sub - plot about how Lucy's celestial spirits react to the news. Some might be overjoyed and offer their own unique forms of protection.