One common theme could be the relationship between the reader and the main characters. For example, the concern or reaction of Sam and Dean Winchester when the reader sneezes, which might show their protective or caring side.
You can try searching on popular fanfiction websites like Archive of Our Own (AO3). Just use the keywords'supernatural','reader', and'sneeze' in the search bar, and it might lead you to relevant fanfictions.
One good example could be a story where a character in the Supernatural universe has a sneeze that triggers some sort of magical event. Maybe Sam Winchester sneezes and it accidentally releases a minor demon that was trapped in a nearby object. Another could be where Castiel's sneeze causes a glitch in his angelic powers for a short time, leading to some comical or interesting situations in the story.
First, you need to understand the Supernatural universe well. Know the characters, their personalities, and the rules of the supernatural world in the show. Then, think about how a sneeze can fit into this world. It could be a plot device, like I mentioned before, a sign of something supernatural. For example, you could start with a character like Jack sneezing and it being the first sign of a new power he's developing. Next, build a story around this idea. Maybe it attracts the wrong kind of attention from other supernatural beings, and the Winchesters have to protect him while also trying to figure out what's going on with his new power.
Fanfiction in general is written by fans of a certain work, like a book, movie, or TV show. In the case of male sneeze fanfiction, it focuses on male characters sneezing. It might seem a bit odd, but some people find it fascinating. For example, in a superhero fanfiction, a male superhero might sneeze due to some strange pollen in a fictional city, and this could lead to an unexpected adventure or a moment of weakness that other characters have to deal with.
His sneeze could be related to his demigod abilities in a more defensive way. Suppose an enemy tries to use a spell or attack that targets his water - based powers. His body could automatically react with a sneeze, which releases a small burst of water - like energy that deflects the attack. It's like his body's natural defense mechanism using his demigod powers in an unexpected way.
In such fanfiction, the relationship between Jack and the reader can be highly variable. It could start as a friendship where Jack is initially naive and the reader helps him understand the world around him. For example, the reader might introduce Jack to human customs and emotions.
One interesting story could be about a reader who gets pulled into the Supernatural world and has to team up with Sam and Dean to fight a new, powerful demon. The reader brings in unique perspectives from the real world that help them in their battles.
First, know the Supernatural universe well, including the characters like Sam and Dean, and the various monsters. Then, think about the role of the reader in the story. Are they a hunter? A psychic? Next, create an interesting plot that can involve the reader character interacting with the main characters. For example, they could team up to fight a powerful demon.
One great 'Supernatural Sam x Reader' fanfiction is 'Sam's Sanctuary'. It beautifully portrays the relationship between Sam and the reader. The story has a great plot where the reader gets involved in one of Sam's hunts and they end up relying on each other. Another good one is 'With Sam by My Side' which focuses more on the emotional connection between them, showing how Sam supports the reader through tough times.