Fanfiction can provide a sense of continuation. Since their own story might have ended, fanfiction gives them the opportunity to be part of new tales, with new challenges and emotions. It also lets them explore aspects that weren't fully developed in the original story, like their deeper friendship or potential romantic feelings.
The main themes include adventure. The whole story is filled with various adventures from battles to exploring new parts of Narnia. Friendship is also key. The relationship between the different characters, whether it's between the Narnians or between the Pevensie children and the Narnians, is based on friendship. And there is a theme of magic. Narnia is a magical world and the use of magic and the presence of magical creatures play an important role in the novel.
A possible plot is that Susan discovers she is pregnant during a time of unrest in Narnia. Caspian is worried about how to protect her and the unborn child. They decide to go into hiding for a while in a secret part of Narnia. There, they live a simple life, and Caspian learns to be more self - sufficient, like fishing and hunting for food. As the pregnancy progresses, they form a deeper bond. Eventually, they return to the kingdom when things have calmed down, and they are welcomed with open arms as they await the birth of their child.
Prince Caspian is of course a very important character. He is the rightful heir to the throne of Narnia. The Pevensie children - Peter, Susan, Edmund and Lucy - are also crucial. They are summoned back to Narnia to help Caspian. Trumpkin, the dwarf, is an important character too. He is a bit grumpy but very loyal and helps the group in their adventures.
One possible fanfiction could start with Susan discovering she is pregnant. Caspian is overjoyed but also filled with a sense of responsibility. They start preparing a nursery in the castle, with Caspian bringing in the finest woods and fabrics. Susan spends her days knitting baby clothes, dreaming of their future child. Their friends in Narnia are excited too, and they all gather to offer their support and gifts. As the pregnancy progresses, they face some challenges, like when Susan has a difficult day of morning sickness, but Caspian is always by her side, bringing her soothing herbal teas.
Another theme could be the integration of Susan's human world values and Caspian's Narnian ways when it comes to parenting. This can lead to interesting cultural clashes and reconciliations. And of course, the theme of love is always present, not just the love between Susan and Caspian but also their love for their baby and how it shapes their actions and decisions in the story.
The theme of friendship and alliance is also prevalent. Hermione and Prince Caspian usually form an alliance. They work together towards a common goal, whether it's saving Narnia from a new threat or bringing about a better future for the land. Their friendship grows as they rely on each other's strengths and overcome their weaknesses.
There could be various fanfictions they might like. For example, adventure - themed ones where they go on new quests together in the magical world. Maybe fanfictions that explore their unspoken feelings for each other in a more in - depth way than in the original stories.
One possible plotline could be that Lucy and Caspian are newly married and the pregnancy is a surprise. They then have to deal with the political implications in Narnia as well as their own personal fears and joys. Another could be that they face some sort of danger during the pregnancy, like an enemy threat that endangers Lucy and the unborn child.