One possible scenario is when Annabeth goes off on her own to solve a mystery or complete a task. Percy would worry about her getting into trouble without his backup. Another is when there are new and powerful monsters around that specifically target Annabeth because of her reputation. He would be worried about her facing them alone.
There are quite a few scenarios. For instance, if Annabeth is exploring an uncharted territory, like a new part of the Labyrinth in some fanfictions. Percy would worry about the unknown dangers there. Another scenario could be when Annabeth is trying to broker a peace deal between two warring factions of demigods. Percy might worry that one side could turn on her. Also, when Annabeth starts to research a very powerful and ancient magic that has the potential to be dangerous if not handled properly, Percy would be worried for her safety and the consequences of her actions.
One scenario could be that Annabeth accidentally revealed Percy's secret identity to someone he didn't want to know. This could put him in danger and make him furious with her.
One possible scenario is that Annabeth might lie to Percy about something really important. For instance, she could lie about her whereabouts when she's actually meeting someone who is not a friend to Percy. When Percy discovers the truth, he would feel betrayed and hurt.
Well, one scenario could be that Annabeth is reminiscing about their adventures together. In the fanfiction, she might be thinking about how Percy has saved her life multiple times. For example, during their battles against various monsters. Another could be that she's thinking about their relationship, like how they first met and how their feelings for each other have evolved over time. Maybe she's considering the future of their relationship in the context of the fanfiction world.
One possible scenario could be that they are simply having a lazy morning in bed, chatting about their next adventure. For example, Percy might be talking about the latest sea monster he heard about, and Annabeth could be making plans on how to defeat it. Another scenario could be that they are recovering from a battle and finding comfort in each other's presence in bed.
One scenario could be that Percy has some sort of magic spell cast on him that makes him smaller. Maybe a mischievous god or a powerful enemy uses a spell to shrink him for their own amusement or to gain an advantage in a battle. This would lead to some interesting situations where Annabeth has to protect him in a different way than usual.
Perhaps in the fanfiction, there are other characters who are jealous of Annabeth's intelligence or skills. So they start spreading rumors or making unfair remarks. Percy defends her because he knows her true worth and capabilities. He would stand up and say things like 'You don't know her like I do. She's always been there for all of us.'
One possible scenario could be that Percy sacrifices himself to save Annabeth from a powerful and deadly monster. Maybe a huge and ancient sea creature that only Percy can hold off long enough for Annabeth to escape, but at the cost of his own life.
One possible scenario could be they sacrifice themselves to save their friends. Maybe they are facing an all - powerful enemy that can only be defeated if they give up their own lives. For example, if there is a dark force threatening to destroy their entire world and the only way to stop it is by using their combined powers in a self - destructive way.
One possible scenario could be during a battle. Annabeth might call Percy Perseus to inspire him, reminding him of the great deeds of the original Perseus. It gives Percy a sense of connection to his mythological past and boosts his confidence. Another scenario could be in a more private, emotional moment. It might be a way for Annabeth to show her deep understanding of Percy's identity as a demigod, using this more formal and myth - related name to convey her feelings.
One possible scenario could be that they meet during a training session at Camp Half - Blood. Percy is new and a bit clueless, while Annabeth is already an experienced camper. She might be showing off her skills, and Percy is in awe of her. Then they start talking, and there's an immediate spark of mutual respect and a hint of rivalry too.