Well, without having read 'inside a night novel', it might be about the mystery and secrets that lurk in the night. It could explore the different characters' experiences in the nocturnal hours, perhaps their encounters with the unknown or their own inner thoughts that come out at night.
Since I don't know the details of this novel, I can't tell you the exact theme. It could be about self - discovery, friendship, or love, like many other novels.
No, it's not a common theme. Most fanfictions tend to focus on the main characters from the original source material, their relationships, and adventures. Themes related to a black baby specifically are not widespread in the fanfic world.
The 'Dark Star Theme' in Bowser's Inside Story is often associated with the dark and menacing aspects of the story. It might be used to create an atmosphere of danger and mystery whenever the Dark Star or its related events are involved.
I'm not sure of a specific 'Inside Out' fanfiction with this theme. But you could try searching on fanfiction websites like Archive of Our Own. Just type in 'Inside Out Joy pregnant' in the search bar, and see what comes up.
The 'Sword Inside Annabeth' as a theme in fanfiction could potentially represent a symbol of power or protection within the character. However, it's not a very common or traditional theme. It might be a very specific interpretation within a certain subset of fanfiction works.
I recommend "Time Smuggler" to you. This novel is a sci-fi-time-travel novel written by the author, Tunshang Tun. It was about a multiverse that was maintained by the Space Administration, and the protagonist faced a group of saboteurs who attempted to destroy the balance of space and time. In this novel, there were lizardmen, robots, and other wonderful creatures. The adventure was also one of the main parts. I hope you like this fairy's recommendation. Muah ~😗
Sharing or seeking such sexually explicit stories is inappropriate and not suitable for public discussion. We should focus on positive, healthy and respectful topics.
It's not a super common theme overall, but it can be found in some horror and science - fiction sub - genres. In horror, it often plays on the fear of the body being invaded and corrupted. In science - fiction, it might be related to alien life forms taking over hosts.
In the ❮ Immortal Cultivation with the Sun Well ❯ and ❮ Borrowing a Dantian from the Heavens ❯, magic, battle energy, and true energy had to be stored in the body of the cultivator for cultivation.