One idea could be that they compete in various school competitions like academic decathlon or sports events, always trying to outdo each other. For example, in a science fair, Percy might do a project on underwater ecosystems because of his love for the water, while Annabeth does something related to architecture. Their rivalry makes them both push harder and come up with more creative ideas.
Start with their first encounter. Maybe it's on the first day of high school when they accidentally bump into each other and immediately get on each other's nerves. Percy could spill his coffee on Annabeth's books, and she gets really mad. This sets the tone for their ongoing enmity.
One idea could be that Percy and Annabeth are new students at a high school filled with mythological secrets. They have to hide their demigod status while also dealing with normal high school problems like exams and bullies. Maybe they join the school's swim team and debate club respectively, which could lead to some interesting interactions.
They could be involved in a high school project that turns out to be related to an ancient prophecy. Percy might use his water - controlling abilities in a science experiment in a really cool and unexpected way, and Annabeth would be there to explain the historical context behind it all.
There's Tyson, Percy's cyclops half - brother. In high school fanfiction, he can be really endearing as the big, strong but gentle guy. He might be on the school football team or something similar. And then there's Rachel Elizabeth Dare. She could be the artsy girl in school who has a bit of a crush on Percy and causes some jealousy with Annabeth, adding some romantic tension to the story.
One possible fanfic could be about Percy and Annabeth facing a new mystery in high school. Maybe there's a strange teacher who seems to know more about their demigod past than they're comfortable with. Percy could be struggling with his ADHD in the academic setting, and Annabeth is constantly helping him study while also trying to solve the mystery of the teacher.
In many fanfic stories, Percy and Annabeth often face various enemies. Some common ones might be new monsters created by the author, or perhaps other demigods who have turned to the dark side. These enemies add drama and action to the stories.
Perhaps in this high school fanfiction setting, Percy has a different group of friends who don't like Annabeth. Their influence on Percy gradually makes him develop a dislike for her. You know, peer pressure can sometimes change a person's attitude towards others.
Percy could show up at Annabeth's high school during a big event like a pep rally. He sneaks in, disguised as a delivery person. When he finally reveals himself to Annabeth in the middle of the crowd, she's shocked but overjoyed. They hug and Percy tells her he couldn't stay away any longer.
Often in these fanfictions, the pregnancy is used to add drama. It might lead to conflicts between Percy and Annabeth, like differences in their opinions on how to handle the situation. For example, Percy might be more laid - back while Annabeth wants a more structured plan. It also might show their friends rallying around them or being shocked. And sometimes, it's a chance to see how they adapt to changes in their social status at school due to the pregnancy.