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.
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.
One popular plotline could be Jeremy's struggle to control his newfound vampire powers. For example, he might have a hard time adjusting to his enhanced strength and speed, leading to some accidental chaos. Another could be his relationships with other vampires. Maybe he forms an unlikely alliance with an older, more experienced vampire who teaches him the ropes of the vampire world. And a third plotline might involve Jeremy trying to keep his vampire identity a secret from his friends and family, while still trying to protect them from the dangers of the vampire underworld.
Jeremy's development as a vampire is also about self - discovery. He discovers new abilities that he didn't know he had. This makes him more confident in some ways, but also more cautious as he realizes the potential harm he could cause. He might start to explore the history of vampires, learning about their origins and the different clans. This knowledge gives him a new sense of identity. He is no longer just Jeremy Gilbert, the human. He is now part of a larger, more complex vampire world, and this new identity forces him to reevaluate who he is and what he wants to be.
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.
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.
A prevalent theme is passion and desire. Given it's lemon fanfiction, the exploration of Jeremy's intense desires and the passion in his relationships is often central. Also, there's the theme of power dynamics. Sometimes, the relationships he's in involve power struggles, whether it's because of different supernatural abilities or social standings within the Mystic Falls community. These power dynamics add an extra layer of complexity to the stories.
The exploration of Jeremy's character in new situations that might not be covered in the original show. In fanfiction, a female character could introduce him to new aspects of the supernatural world or human relationships. It can add depth to his character and show different sides of him that we may not have seen before. Also, the way female characters interact with Jeremy can create new and exciting storylines.
Love and romance are also quite common. She might fall in love with a different character or have a complicated love triangle. Additionally, themes of power and strength are often explored. How fem Jeremy gains power, whether it's physical, magical or mental, and how she uses it to face challenges.
One common theme could be the challenges of unexpected pregnancy. Jeremy Gilbert might face difficulties in dealing with the news, both emotionally and practically. Another theme could be the reactions of the people around him, like friends and family, and how they support or oppose the situation.