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.
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.
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.
It could be that there are some internal issues within Fairy Tail that make her leave while being pregnant. For example, there might be a prophecy or a curse that she believes could harm her baby if she stays. So, in order to break free from that potential threat, she decides to leave. Also, she may be facing some personal conflicts with other members of Fairy Tail regarding her pregnancy, like some not being supportive or having different views on how she should handle it, which ultimately drives her to leave.
One possible plot could be that Gray kidnaps Lucy as part of a misguided attempt to protect her from an unknown danger. He might think that by taking her to a secluded place, he can keep her safe from a powerful enemy that is targeting her.
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.
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.
The plot could develop with them preparing for the baby. They might start looking for a bigger place to live. Natsu could go on quests to earn more money for the baby's needs.
The plot could involve the challenges they face as new parents. Maybe they struggle with balancing their own relationship while taking care of the baby. There could be financial difficulties or family interference that they have to deal with. And of course, there would be lots of cute moments like the baby's first steps or first words, which would bring them closer as a family.
The plot could involve them preparing for the arrival of the baby. They might start looking for a new place to live, something more suitable for a family. There could also be some drama, like an enemy from their past resurfaces and they have to protect not only themselves but also their unborn child.
One possible plot could be that Daniel and Lucy face unexpected challenges during the pregnancy. Maybe they have to deal with financial difficulties while preparing for the baby. They could also struggle with family reactions, like Lucy's parents being initially against the idea of them having a baby so young.