Many fans might be shocked or find it very out - of - character. Since the relationship between Sebastian and Ciel in the original has a certain dynamic that doesn't typically lead to this kind of situation. Some might even be offended as it could be seen as a major deviation from what they love about the original work.
There may be some fanfiction out there with this concept, but it's not something that aligns with the typical understanding of the characters. However, if you search on some general fanfiction platforms, you might come across some stories. But be aware that they might deviate significantly from the original source material and may not be to everyone's taste. It's important to approach such fanfiction with an open but critical mind.
There's also 'A New Beginning'. This fanfic takes a different approach. It focuses more on the world - building aspect around Ciel's pregnancy. It shows how the other characters in the Black Butler universe react to this news and how Sebastian tries to protect Ciel and the unborn in a world full of danger and mystery.
Well, in non - lemon fanfic, Sebastian is often depicted as a sophisticated, powerful demon who is bound by contract to serve Ciel. Ciel is a young, determined noble with a dark past. But in lemon fanfic which is inappropriate, it may distort their characters in improper ways for the sake of adult - themed content. So it's better to focus on their proper character traits from the original source like Sebastian's loyalty (in a non - inappropriate sense) to the contract and Ciel's intelligence and drive to seek revenge.
At first, Sebastian may be confused. Demons don't typically deal with pregnancy. However, his loyalty to Ciel would make him take on the role of a protector very seriously. He would be constantly vigilant, making sure Ciel has proper nutrition and rest. He might also start to feel a strange sense of possessiveness over Ciel and the unborn child, which is a new emotion for him as a demon. And he would have to deal with his own internal struggle as his demon nature clashes with this newfound care for Ciel and the pregnancy.
Sebastian and Ciel lemon fanfiction often explores the complex relationship between the two characters in a more intense and sometimes romantic or angsty way. These fanfictions can vary greatly in quality. Some may focus on the power dynamic between Sebastian, the demon butler, and Ciel, his young master. For example, they might depict how Ciel's vulnerability and Sebastian's unwavering loyalty (albeit with his own demonic motives) can be twisted into a more passionate connection in the fictional world created by the fanfic author.
I would recommend 'Sebastian's Temptation'. This fanfiction does an excellent job of building up the tension between the two characters. It starts with small, subtle moments of connection and gradually progresses into a more intense relationship. It also stays true to the personalities of Sebastian and Ciel from the original series. There's also 'The Forbidden Bond' which is known for its well - written dialogue and how it weaves the lemon elements into the story without making it seem out of place.
I like 'Ciel's Hidden Desires' a lot. It doesn't go too far from the original themes of the series but adds a new layer to Ciel and Sebastian's relationship. The story is well - written, and the characterizations are on point. And 'Sebastian's True Loyalties' is also a great find. It questions Sebastian's loyalty in different situations, which is really thought - provoking when it comes to his relationship with Ciel.
Yes, there might be some fanfictions with this concept that are written in a tasteful and appropriate way. However, it's important to note that such a plot is quite out - of - the - ordinary for the original source material. Some fanfic writers may be able to handle it in a creative and non - offensive manner, perhaps by exploring unique storylines or alternate universes within the framework of the 'Alois' and 'Ciel' characters.
On the other hand, there could be a glimmer of hope in their relationship. Maybe through the shared experience of the pregnancy, they start to see the good in each other. Clary might see a side of Sebastian that she never knew existed, and Sebastian might start to have real feelings for Clary and the baby, leading to a more complex and evolving relationship.