Love and devotion are very common themes. Most fanfictions focus on how deeply Elizabeth loves Ciel and vice versa, despite all the difficulties they face.
One common theme is love against all odds. Their different social standings and the situations Ciel is often in make their relationship a struggle, but love perseveres. Another is the theme of loyalty. Elizabeth's loyalty to Ciel and vice versa is often explored.
A less common but still interesting theme is role - reversal. Some fanfictions might have Elizabeth taking on a more active or dominant role, perhaps in protecting Ciel or being involved in the more dangerous aspects of his world. This can bring a fresh perspective to their relationship and the 'Black Butler' universe as a whole.
One great ciel x elizabeth fanfiction is 'A Royal Bond'. It beautifully depicts their relationship in a more romantic and adventurous setting. The author does an excellent job of showing Elizabeth's growth and her deepening connection with Ciel.
One idea could be exploring how Ciel and Elizabeth handle the news. Maybe Ciel becomes overly protective, trying to keep Elizabeth safe from all possible threats. He could hire extra guards and limit her outings. Elizabeth, on the other hand, might feel a bit stifled but also understand his concern. Another plot could involve how their families react. Elizabeth's family might be overjoyed and start planning a grand celebration, while Ciel's family business and the underworld he's involved in could pose some challenges to the pregnancy, like potential enemies using it as a weakness.
One popular ciel x elizabeth lemon fanfiction is 'A Royal Bond'. It beautifully portrays their relationship with unique plot twists. Another one is 'Love in the Manor' which focuses on their growing affection in the setting of Ciel's manor.
Their relationship would likely become more intimate in some ways. Ciel, who is usually stoic, might show more of his softer side to Elizabeth. He would be more concerned about her well - being, not just as his fiancée but as the mother of his child. Elizabeth would also feel closer to Ciel, seeing this new side of him. They would probably spend more time together, with Ciel making sure to be there for important doctor appointments and such.
The relationship development is very interesting. Since Ciel has his own dark past and Elizabeth has her own expectations of marriage, seeing how they come together and make it work in fanfiction can be really engaging.
You can try Archive of Our Own (AO3). It has a vast collection of fanfictions, including many about Ciel and Elizabeth. Just use the search function and type in their names to find relevant stories.
Well, 'Ciel and Elizabeth: Hidden Feelings' is quite interesting. It starts with Elizabeth realizing some hidden feelings she has for Ciel that she hadn't been fully aware of before. This fanfiction then takes the readers on a journey of self - discovery for Elizabeth and how it impacts her relationship with Ciel.