It might include a vampire hunter who is on Jeremy's trail. Also, Jeremy's family members could be important characters as he tries to protect them from the vampire world he has now become a part of.
Well, in 'jeremy becomes a vampire fanfiction', perhaps Jeremy is turned into a vampire by a mysterious vampire who has some special plan for him. As a vampire, he discovers new powers and abilities. He might get involved in a vampire society full of politics and rivalries. He has to learn the rules of this new world and figure out if he wants to be a 'good' vampire or not.
Perhaps a plot where Jeremy uses his new vampire powers to protect Mystic Falls. He becomes a sort of vampire - hero. He could use his enhanced speed and strength to fight off other supernatural threats that the town faces, all while trying to come to terms with the fact that he's no longer human.
Jeremy in the 'jeremy monster story' might be a young adventurer. He could be someone who is curious and that's why he gets into a situation with a monster. For example, if the story is set in a magical land, Jeremy might be exploring and accidentally disturbs a monster's lair.
At first, Elena might be shocked and a bit scared when she finds out. Their relationship could become strained as she has to adjust to the idea of her brother being a vampire. But over time, they could grow closer as Jeremy learns to control his vampire side and Elena sees that he's still the same person deep down.
Maybe Percy becomes a hunter to protect a certain forest that is in danger. He discovers that there are dark forces at work that the normal heroes haven't noticed. As a hunter, he uses his quick thinking and physical abilities to gather information. He then teams up with other hunters, and they gradually accept him as they see his determination and unique skills.
Since we only know about the 'jeremy zoe secret story', it's difficult to say precisely who they are. They could be individuals in a small town where everyone knows each other and this secret story is something that only a few are privy to. They might be artists who have a secret creative process that they don't want others to know about. Or perhaps they are athletes who had a unique training experience that they are keeping under wraps.
One idea could be that Naruto is forced to become a hunter nin after a rogue ninja from another village steals a powerful Konoha jutsu. He has to track the ninja down, using his unique skills like the Shadow Clone Jutsu for surveillance. Along the way, he discovers new chakra abilities that are specific to the hunter nin role.
There could be a group of poachers who are not just after regular game but are also involved in some dark magic. They oppose the hunters and especially Percy when he tries to stop their illegal and dangerous activities. They might have powerful backers or magic items that make them a formidable foe for Percy and the other hunters.
In this fanfiction, Naruto might gain new and stealthy abilities as a Hunter Nin. He could be tasked with tracking down dangerous rogue ninjas. His skills in stealth and assassination, which are not typically associated with his regular character, would develop. This would add a new layer of complexity to his character and the Naruto universe in general.