The theme of self - discovery is also prevalent. Fem Ciel has to figure out who she is in a world that was originally set up with a male Ciel in mind. She may struggle with her identity, both as a Phantomhive and as a female in a male - dominated society, and this journey of self - discovery is often a central part of the fanfiction.
One common theme is the exploration of gender roles. Since Ciel is female in these fanfictions, it often shows how she defies or conforms to the Victorian era's expectations of women while dealing with the underworld and supernatural elements. For example, she might have to balance her ladylike image with the need to be a strong and decisive leader like the male Ciel was.
Another theme is the alteration of relationships. Her relationship with Sebastian, for instance, can take on a different tone. It could be more of a complex mix of admiration, loyalty, and perhaps a different kind of romantic tension. Also, her relationships with other characters like Alois or the servants may be re - imagined in ways that are unique to the fem Ciel concept.
One common theme is identity. Since Ciel already has a complex identity, adding a twin doubles that complexity. Another theme is family, exploring the relationship between the twins and how it affects their actions.
Family or surrogate family is also a theme. Given Ciel's tragic family situation in the original, fanfictions may introduce new characters or develop existing relationships in a way that gives baby Ciel a sense of family. For instance, some stories might have the servants of the manor taking on more parental roles towards the baby Ciel, creating a warm and loving environment for him to grow in.
One common theme is mystery. Ciel's eye is already quite mysterious in the original work, and fanfictions often delve deeper into it. For example, they might explore the origin of its power in more detail.
One common theme is Ciel's revenge. Since his backstory in the original series is about seeking revenge, many fanfictions explore this further. Another is his relationship with Sebastian, so there are a lot of fanfictions that focus on their master - servant dynamic in different situations.
One common theme is loyalty. Finny's unwavering loyalty to Ciel is often a central aspect. Another theme could be protection. Finny protecting Ciel from various threats, be it other supernatural beings or human enemies. Also, growth is a theme. Ciel might grow as a person because of his interactions with Finny, learning about emotions like trust and kindness that he may not have fully understood before.
One common theme is the exploration of Ciel's relationship with Sebastian as a demon. How their contract changes and how Ciel adapts to his new demonic nature. Another theme is Ciel's struggle for power in the underworld, as he is now a demon. It often involves him facing other powerful demons.
In Black Butler Alois x Ciel fanfiction, a frequent theme is the idea of redemption. Despite their often cruel actions, some fanfictions try to show a path of redemption for either or both of them. Also, the theme of rivalry is common. They compete for various things, like influence in the underworld or the loyalty of certain characters. And there's the theme of emotional turmoil, as both Alois and Ciel have deep - seated emotions that are often in conflict with each other.
One common plot is other characters in the 'Black Butler' universe taking care of a sick Ciel. Sebastian, being his butler, often plays a major role in these stories. He might go to great lengths to find a cure or just to make Ciel comfortable while he's ill.
One common theme is the vulnerability of Ciel. When he's sick, his usually strong and stoic facade crumbles, and we see a more human side of him. Another theme is the loyalty of his servants. They go to great lengths to care for him, highlighting the bond they have. For example, Sebastian might use his demonic powers in a different way to heal Ciel rather than just for his usual tasks.
One common theme is the power imbalance. Sebastian is a powerful demon, and Ciel is a young, mortal master. This creates a lot of tension and interesting situations where Ciel is constantly trying to hold his own against Sebastian. Another theme is loyalty and its limits. Sebastian is bound by a contract, but his true motives are often questioned.