I'm not sure specifically as there could be many short stories with 'the locked door' as the title. Generally, it might involve mystery around the locked door, like someone trying to figure out what's behind it, or it could be a symbol of something hidden or forbidden.
The significance could be that it represents a final barrier or mystery. It might symbolize something that the main character has yet to overcome or understand, like a hidden truth or a last challenge.
There could be a detective - like character in 'the locked door short story'. If the locked door is part of a mystery, perhaps a detective is called in to solve the case. There might also be an old caretaker of the building where the locked door is located. The caretaker might have some knowledge about the door but is reluctant to share it at first.
Maybe it's a magical world or a place where the secrets of the forest are stored. It could also be a place that holds the key to the character's past or future.
The scariest thing could be a deranged clown. Imagine a clown that was locked away long ago for scaring kids too much. It's been trapped behind that door, and now it's angry and waiting for someone to open the door so it can have its revenge on the children in the playground.
Once upon a time, in an old, dilapidated playground. There was a locked door at the back of the abandoned equipment shed. One night, a group of kids dared each other to go and touch the locked door. As soon as the bravest one approached it, he heard strange whispers coming from behind the door. His hands felt ice - cold when he touched the rusty doorknob. He ran away as fast as he could, and the others followed, all feeling a sense of dread.
In this 'cursed in remnant dark souls rwby fanfiction', perhaps there's a curse that has spread across Remnant. It could be a curse that changes the nature of the Huntsmen and Huntresses, making their fight against the Grimm more difficult, similar to how the challenges in Dark Souls are often overwhelming. It might also introduce some dark and twisted elements into the RWBY world that were not there before, creating a new and unique story within the fanfiction.
Harry Potter can be a conduit fanfiction because of its extensive world - building. The detailed descriptions of Hogwarts, Diagon Alley, and the Ministry of Magic give fanfiction writers a lot to work with. They can use these settings as a base for their own stories.
I'm not entirely sure specifically about a fanfiction titled 'naruto is a conduit' without reading it. It could potentially be a story where Naruto has some sort of special role as a conduit, perhaps for a unique form of energy or power in the Naruto universe. Maybe it involves him being a conduit for an ancient or new type of chakra.
There's also a possibility that some of the minor RWBY characters become the main focus in this fanfiction. For instance, characters like Jaune or Pyrrha could be central to the story if the curse has something to do with their past or their abilities. Maybe Jaune discovers that he has a special connection to the curse because of his family's history in Remnant, and he has to take on a bigger role to deal with it, much like how in Dark Souls the player character often has a unique destiny related to the world's curses.