The 'slow - burn romance' is really common. It takes time for John to fully accept Sherlock as a vampire and for their relationship to develop into a romantic one. Also, the 'discovery' trope is often used. John discovers Sherlock's vampire nature in different ways, like stumbling upon him feeding or noticing his inhuman abilities. This leads to a lot of interesting plot developments as John has to come to terms with it.
There's often the 'unaware John' trope. John may be oblivious to Sherlock's growing affection, thinking Sherlock is just being his overly - intense self. And a lot of these fanfictions play with the idea of Sherlock's internal struggle. He's trying to reconcile his new - found emotions with his rational mind.
Well, 'Moonlit Mysteries' is a fanfiction that you might enjoy. In this story, Sherlock's vampire identity is a well - guarded secret at first. John slowly starts to suspect something is different about him. The way the author builds up the tension and the slow - burn romance between them is really engaging. Also, 'Vampiric Intellect' is a story where Sherlock's vampire abilities enhance his deductive skills in a very interesting way, and his relationship with John is at the center of the plot.
There are many interesting fanfictions about Vampire John and Sherlock. One common theme could be how Sherlock, with his brilliant deductive skills, discovers John's vampire nature. It might involve a lot of mystery-solving around John's condition and how they navigate their relationship in the face of this new revelation.
The appeal lies in the unique twist it gives to the classic characters. It combines the mystery-solving aspect of the original Sherlock Holmes concept with the allure of the supernatural. Vampire John adds an element of danger and mystery.
One popular trope is the 'fish out of water' situation where Benedict Cumberbatch's Sherlock is thrust into a situation created by a fanfiction writer that's different from the show. For example, being in a modern-day high school setting while still having his brilliant detective mind. Another common one is the 'hurt/comfort' trope, where Sherlock gets injured during a case and his friends, or sometimes a new character from the fanfiction, take care of him. And then there's the 'alternate universe' trope, like a Sherlock in a steampunk world or a world where magic exists.
The 'time - travel' trope can be seen in some fanfictions. A character from 'Vampire Diaries' might travel back in time to the era of 'Merlin' and change the course of events. Or vice versa. The 'hidden identity' trope is also popular. A character might be hiding their true identity as a wizard from 'Merlin' in the 'Vampire Diaries' world. And the 'battle of powers' trope, where characters from both series test their powers against each other to see who is stronger.
Popular sherlock and john fanfiction often has strong characterizations. It stays true to the essence of Sherlock and John from the original series. The relationship between them is a key focus, whether it's a deep friendship or something more romantic. Also, a good mystery or adventure element is common, as it was a big part of the original Sherlock Holmes stories.
The 'Forbidden Love' trope is also common. Kai might fall in love with a character he shouldn't, like a vampire hunter or a witch from an opposing coven. It creates a lot of drama and tension in the story. For instance, in some fanfictions, Kai's love interest is from a family that has been sworn enemies of his for generations, and they have to fight against all odds to be together.
One of the most popular tropes is the 'forbidden love' trope. Since Stefan has a complex past and Caroline has her own set of responsibilities in the vampire world, their relationship can often be seen as something that's not supposed to happen. It adds a lot of drama and tension to the stories.
The 'power - sharing' trope is also common. This could be where Hermione's magic and the powers of the vampires or other supernatural beings in The Vampire Diaries interact in unexpected ways. Maybe she uses her magic to enhance their powers or vice versa. It creates a lot of interesting plot possibilities.