The story might focus on how Eragon and Arya adjust to being parents. They are both used to their own important roles in their respective communities. Now, with a baby, they have to balance their duties and their new family life. The baby could also be a bridge for better relations between humans and elves, which is a big deal considering the history between the two races in their world.
One possibility is that the baby has a unique destiny. Since Eragon was the Dragon Rider and Arya has her own important standing among the elves, their child could be prophesied to bring about a great change. It could be a change for peace, perhaps uniting all the different species against a common threat that they haven't faced before. The fanfiction could explore how they raise the child to fulfill this destiny.
A potential plot might involve Arya and Eragon having to hide their pregnancies at first. Since they are important figures in their world, their pregnancies could cause political unrest or draw unwanted attention from those with ill intentions. As they progress through their pregnancies, they could also discover new magical aspects related to the unborn children, like special powers or a connection to an ancient prophecy. They would then have to deal with the implications of these discoveries while preparing for parenthood.
Perhaps Eragon and Arya have traveled far and wide across the land, exploring new places and uncovering long - lost secrets. Their bond with their dragons might have deepened even more over the 100 years, allowing them to perform extraordinary feats. Also, they could be involved in diplomatic efforts between different kingdoms, using their influence to maintain peace.
In fanfiction, their baby could change their social standing as well. They might become more respected in some ways because they are now parents. But also, they could face envy or suspicion from others. The baby could be seen as a powerful being in the making, so they would need to ensure the baby grows up in a safe and positive environment, which would be a big change from their previous, more carefree lives.
One challenge could be financial in the context of their world. They need to ensure they have enough resources to take care of the baby. This could involve finding a suitable place to live, getting proper food and clothing, and having the necessary magical or non - magical items for the child's upbringing. It's not easy when they also have to deal with their own responsibilities in the world of magic and adventure.
In a fanfic focused on Eragon and Arya cuddling, the author could play with different emotions. For example, Arya might be initially hesitant because of her elven nature and the formality she's used to. But as they cuddle, she starts to let her guard down. Eragon, on the other hand, might be filled with a sense of contentment and wonder. The story could also touch on how their different cultures and powers interact in this intimate moment. For instance, Eragon's dragon - related magic might create a warm, comforting aura around them while Arya's elven grace adds an ethereal quality to the scene.
One common theme is the struggle for power. Since they are in a world full of magic and different factions vying for control, fanfictions often play with this idea in relation to Eragon and Arya. Also, the theme of friendship is prevalent. They are comrades in a way, and fanfictions develop this aspect further. For example, in some fanfictions, their friendship is what saves them from a great danger.
They could potentially be partners in rebuilding the post - war world. Eragon with his skills and Arya with her knowledge might work side by side to bring about positive changes. This would not only be beneficial for their respective kingdoms but also for their relationship as they would rely on and respect each other's abilities.
They could potentially be in a romantic relationship. The shared danger and the bond formed during the war might have led to deeper feelings. Eragon has always been attracted to Arya, and in the post - war peace, those feelings could fully blossom. They would face new challenges together as a couple, like integrating their different cultures.
I'm not sure if there's a specific fanfiction where Arya is pregnant. Fanfiction is a vast world with different interpretations. Some fanfic authors might be interested in exploring this kind of relationship development and the implications of Arya being pregnant, but it might also deviate from the original tone and themes of the 'Eragon' series. You could start by looking at fanfiction archives dedicated to 'Eragon' and use relevant search terms.
It might be full of drama. There could be concerns about the baby's future, like what kind of powers it would inherit. Also, it would likely change the dynamic between Eragon and Arya. They would have to deal with the responsibilities of parenthood. Maybe Eragon would become over - protective, and Arya would struggle between her duties and being a mother.