In the fanfiction, perhaps Annabeth would notice some new skills that Percy has developed in his swimming. She could be really proud of him and later on, they might talk about how he improved. She might also compare his swimming style to his fighting style, seeing the similarities in his determination and speed in both activities.
She could be a bit nervous too. In case Percy doesn't do as well as he hoped, she might be worried about how he'll feel. But at the same time, she has faith in him, so it's a mix of emotions. She might also be looking forward to seeing Percy in his element, as he's always so confident in the water.
There could be a school janitor who is actually an old demigod who retired from the hero business. He could give Percy some valuable advice based on his own experiences. And of course, Percy will surely meet Annabeth's classmates, some of whom could be friendly and some not so much, depending on how they react to the new boy in school.
One possibility is that Percy clashes with the school's jocks or popular kids. Since he's an outsider, they might pick on him at first. But then Percy shows them what he's made of, not with brute strength necessarily but with his quick thinking and his ability to outwit them. He could also get involved in a school competition, using his unique skills to help his team win.
In fanfiction, when Percy and Annabeth meet, they might have a super sweet reunion. Maybe they'll share a warm hug and exchange some inside jokes that only they understand. It could be in a new and exciting setting, like on a mysterious island they've never been to before.
Well, she might cause quite a stir. Maybe she'll outshine everyone in academic competitions, which could make some students jealous. And she could also form a study group with Percy and their friends, sharing her vast knowledge of mythology and ancient civilizations.
Well, she might immediately stand out. She's super smart and used to a different kind of education in Camp Half - Blood. At Percy's school, she could ace all the academic subjects, especially in areas like architecture - related studies since she has a passion for it. Maybe she'd also get into some trouble with the school bullies who don't like smart new kids. And she'd probably befriend Percy's other friends, but also keep a bit of an air of mystery about her demi - god status.
Well, in the fanfiction, Percy's friends might be in awe of Annabeth's intelligence. She could lead them in some sort of adventure or strategy planning. Maybe they initially have some misunderstandings but then come to respect her as they see how much she means to Percy.
In fanfiction, when Annabeth's cousins meet Percy, there could be a range of reactions. They might be initially suspicious of him, given his relationship with Annabeth. Maybe they test his abilities, especially if they are also demigods. They could also become fast friends if Percy shows his heroic and kind nature.
They might have a really emotional reunion. Percy could give Annabeth a big, warm hug and they'd start reminiscing about their past adventures together, like the time they were in the Labyrinth or on their quests.
Well, they might have to hide their demigod powers. For example, Percy could be really tempted to use his water - controlling abilities when they are near a big fountain in front of mortals, but he has to hold back. Annabeth would be using her wisdom to come up with quick lies if the mortals start asking too many questions about their strange behavior or the weapons they carry.