Another theme is the protection of the baby. Given their dangerous line of work, they are constantly worried about the safety of their child. This often leads to some tense and exciting plotlines where they use their detective skills to keep the baby out of harm's way. In some fics, this also involves dealing with villains who might target the baby.
One common theme is Sherlock's early intelligence. Writers often explore how even as a baby, he can see things that others miss.
In Sherlock baby daughter fanfiction, a major theme is the impact of the daughter on Sherlock's life. This can range from changing his perspective on life in general to influencing his detective methods. For example, he might start to see cases from a more empathetic angle because of his daughter. Another theme is the relationship between the daughter and the other characters in Sherlock's world, like Watson. How Watson interacts with the baby daughter and how he helps Sherlock in his new role as a father are often explored.
There's also 'The Baby in 221B'. This fanfic focuses on the comical aspects of having a baby in their apartment. Sherlock's attempts at baby - proofing in his own unique way and Joan's motherly instincts kicking in make for a really fun read. It shows how their relationship evolves even further with the addition of a new family member.
One great 'Sherlock and Joan' fanfiction is 'The Unseen Bond'. It delves deep into their relationship, exploring how they handle cases outside of the regular show plot. Another is 'A New Adventure' which takes them on a journey to a foreign country to solve a mystery that has international implications. There's also 'Joan's Perspective' which is interesting as it's told from Joan's point of view, giving new insights into her thoughts about Sherlock and their partnership.
One common theme is vulnerability. In these fanfictions, Sherlock, who is usually seen as a strong and unflappable character in the original series, is shown to be vulnerable due to his injuries. This allows for a different side of his character to be explored.
A common theme is family. Since they are siblings, a lot of fanfictions explore their family dynamic, how they support or clash with each other. Another is mystery - solving, as both are known for their detective skills. They often team up or compete in solving cases in fanfictions.
Another theme is the vulnerability of Sherlock. Usually he is portrayed as a super - intelligent and almost unbreakable character, but in these fanfictions, his injury makes him more human and shows his weaknesses. It also often explores the relationships around him, like how Watson steps up to take care of him, highlighting their friendship.
The mystery - solving aspect remains a strong theme even with the vampire element. Sherlock still uses his brilliant mind to solve crimes, but now he might have additional clues or challenges because of his vampiric abilities. Also, the theme of secrecy is common. Sherlock has to hide his true nature from most people, which adds an extra layer of intrigue to the stories.
One common theme is the clash between Sherlock's rational thinking and the irrationality of the vampire world. For example, he has to use his detective skills to figure out vampire - related crimes while dealing with the fact that vampires break many of the natural laws he believes in.
One common theme is the shock and adjustment. Sherlock is often portrayed as being initially stunned by the news of pregnancy and then having to adjust to a new way of life. Another theme is the support system, showing how his friends like John Watson are there for him. And the theme of self - discovery also pops up a lot, as Sherlock discovers new aspects of himself during the pregnancy.