Love and romance are quite common. The balcony of a castle can be a very romantic setting for characters to meet, confess their love, or have a secret tryst.
There are some fanfic communities on Reddit as well. You might search for 'balcony castle fanfic' in relevant subreddits like r/fanfiction. Sometimes users share their own works or recommend great reads that could be about such settings.
One common theme could be mystery. Since it involves a 'castle' which is often associated with secrets and the 'dead', there might be a lot of mystery - solving in the fanfic.
Another common theme might be self - discovery. The characters in 'castle alsxis' fanfic could be on a journey to understand themselves better. They might face challenges that force them to look inward and grow as individuals, all within the context of the 'castle alsxis' world. This could involve learning about their powers, if they have any, or their place in the society of that fictional world.
Friendship is a very common theme. The stories often focus on how Castle and Vaughn support each other through different situations.
One common theme is the idea of a private, yet somewhat public, space for love to develop. The balcony is a place where the characters can be semi - isolated but still part of the outside world.
Love and acceptance is also a prevalent theme. Since Beckett comes into Castle's life and becomes part of Alexis's world, fanfics may focus on how they all learn to love and accept each other fully. This could involve storylines where there are initial misunderstandings but eventually they come to a place of complete acceptance and harmony in their relationships.
The theme of danger and suspense is always there. Readers love the feeling of not knowing what will happen next. Whether it's a character in a dangerous situation or a new clue that could change the course of the investigation, the suspense keeps the readers hooked. Additionally, some fanfics explore the psychological aspects of the characters, like how they deal with the stress of the murder investigations.
One common theme could be the deepening of their relationship. Given the 'rated M' aspect, it might explore the more passionate and physical side of their connection.
One common theme is sacrifice. Either Castle or Beckett may sacrifice their relationship for the greater good, like protecting the other from a dangerous situation. Another theme is the power of love. Despite being forced apart, their love still endures and is often the driving force that eventually brings them back together.
One common theme is adventure. The castle often serves as a mysterious and exciting place filled with hidden passages, treasures, and secrets waiting to be discovered. Another theme could be power. Castles are symbols of power in fiction, whether it's a noble family's stronghold or a villain's lair. Also, love stories can be set in castles. A knight might fall in love with a lady in the castle, and their love has to overcome various obstacles within the castle walls.