Well, in the fanfic, Ciel's fear of the dark might be related to his overall sense of powerlessness. Despite his position and intelligence, the dark represents something he can't easily combat. His experiences with the occult and the dark side of the world in the original story might make the concept of the dark even more terrifying for him. This fear could also lead to interesting interactions with other characters, like Sebastian, who might either use this fear to his advantage or try to help Ciel overcome it.
In this fanfic, Ciel's fear of the dark might be a manifestation of his past traumas. He has endured so much at a young age, and the dark could symbolize the unknown and the things he fears from his past, like the abuse and the loss he has faced.
The theme of Ciel's fear of the dark can add a lot of tension to the plot. It creates new obstacles for Ciel to face, making the story more interesting.
A fanfic could show a moment where Ciel is at his most vulnerable, and Lizzy is the only one there to comfort him. Perhaps after a particularly difficult encounter with a foe, Lizzy finds Ciel in his study, and she simply holds him without saying a word, which means a great deal to Ciel.
A fanfic might explore their relationship in a different time period. For example, what if they were children again? They could have innocent playdates that gradually reveal their deep - seated feelings for each other. Ciel might be less guarded around young Lizzy, and she could bring out his softer side.
One possible fanfic could focus on Ciel having an asthma attack during a crucial moment, like in the middle of a negotiation with a powerful adversary. His butler, Sebastian, would then have to quickly find a way to help him while also maintaining their cover. Maybe Sebastian uses his demon powers discreetly to ease Ciel's breathing.
In Black Butler fanfiction, the relationship between Alois and Ciel is often complex. They are both strong - willed characters. Alois is more impulsive and erratic, while Ciel is calculating. Sometimes, fanfictions explore a rivalry between them, with each trying to outwit the other in the dark world they inhabit.
One popular 'Black Butler Female Ciel Fanfic' is 'The Lady Phantomhive'. It gives a really interesting take on how a female Ciel would handle the various situations in the Black Butler universe. Another great one could be 'Female Ciel's Ascent' which focuses on her growth and development in a unique way compared to the original male Ciel in the series.
A possible plot could be that Ciel is poisoned. It could be a slow - acting poison that he unknowingly ingests during a dinner party. As he slowly succumbs to the poison, Sebastian tries everything he can to save him but fails. His death then causes chaos in the underworld as his position as the head of the Phantomhive family is left vacant, and many vultures start circling around to take advantage of the situation.
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.
The mystery surrounding Ciel in 'Black Butler R Ciel Fanfic' is a big draw. His complex personality and the secrets he holds make for great storytelling. Writers can explore different aspects of his character, like his hidden desires and fears.
The theme of sacrifice also shows up a lot. Ciel may sacrifice his own humanity in order to achieve his goals, and Sebastian may sacrifice his own freedom in a way by being bound to Ciel. And there's always the theme of the supernatural, with Sebastian being a demon and all the dark magic and otherworldly elements that come with that in the fanfics.