There might be a fanfiction where Ciel catches a cold during a mission. His sneezes start to give away their position, creating a tense situation. The writer could play with the idea of how the other characters, like the servants, react to their young master being sick. They would be worried but also a bit clumsy in their attempts to nurse him back to health.
First, you need to set the scene. Describe how Ciel starts to feel unwell. Maybe it begins with a slight shiver or a tickle in his nose. Then, when it comes to the sneezes, be creative. You could write something like 'Ciel's small frame was wracked with a sudden sneeze, his hand flying to his face.' Also, consider how the other characters will react. Sebastian might be both concerned and a bit amused at his master's vulnerability.
One great fanfiction could be where Sebastian tries every possible method to cure Ciel of the flu quickly, but Ciel's stubbornness makes it difficult. Maybe he refuses to stay in bed and rest, causing more trouble for Sebastian as he tries to take care of his young master while also dealing with the manor's affairs.
In a fanfiction scenario, Finny's sickness could be caused by some sort of magical influence in the Black Butler universe. His sneezes might be so powerful that they accidentally cause minor chaos around the manor, like knocking over vases. Mey - Rin could be worried sick about him and try to take care of him with her own clumsy but endearing ways.
Finny might accidentally break things around the manor while sneezing due to his superhuman strength. For example, he could sneeze and send a stack of books flying across the room.
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 possible fanfic could be about Ciel getting a mysterious illness that makes his servants scramble to find a cure. They might call in various doctors or use their own unique skills to try and heal him. Sebastian, in particular, would be torn between his loyalty to Ciel and his own demonic nature, as he sees Ciel in a vulnerable state.
Finding good 'Black Butler' Ciel sick fanfiction can be a bit of a treasure hunt. Some lesser - known but great platforms for fanfiction include Wattpad. Although it has a lot of different types of stories, if you search specifically for 'Black Butler' Ciel sick fanfiction, you might find some interesting ones. Additionally, following some 'Black Butler' fan accounts on Twitter might lead you to discover new fanfictions. These accounts sometimes retweet or recommend fanfictions written by their followers, which could include the Ciel sick ones you're looking for.
One great 'Black Butler Ciel and Sebastian fanfiction' is 'The Demon's Contract Renewed'. It delves deeper into the complex relationship between Ciel and Sebastian. The author beautifully portrays Ciel's struggle with his past and future while maintaining his pride, and Sebastian's unwavering loyalty (in his own devilish way). It's a must - read for any fan of the duo.
I really like 'Ciel's Cat Adventure'. In this fanfiction, Ciel as a cat encounters various characters from the series in unexpected ways. It's a light - hearted read compared to some of the darker aspects of the original Black Butler, but still manages to capture the essence of the characters. It shows Ciel's intelligence even in his cat form as he navigates through different situations.
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.