Princess Annabeth is often depicted as highly intelligent. She uses her wits to solve problems and strategize. For instance, when dealing with threats to the kingdom, she can quickly analyze the situation. Prince Percy is usually brave. He doesn't shy away from danger and is always ready to fight for what's right. In many fanfictions, he might be the first to charge into battle to protect the princess or the kingdom.
Perhaps they are from rival kingdoms that have been at war for generations. They meet by chance in a neutral territory and instead of fighting, they start to talk. They realize that the war has been caused by misunderstandings between their families. So, they decide to work together to end the war. They face opposition from their own families and kingdoms, but their love for each other gives them the strength to persevere and bring peace.
It could be Chiron, the centaur. He's always keeping an eye on the campers and would likely be concerned if he caught them up to something. He might give them a stern talking - to and some extra chores as punishment.
Percy might be a bit flustered and embarrassed. He's protective of his relationship with Annabeth, so having Magnus walk in might make him feel like their privacy has been invaded. He could quickly try to shield Annabeth or just look really shocked.
Their shared experiences play a big role. They've been through so much together, like countless battles and adventures. Percy has seen Annabeth in tough situations and he knows how strong she is, but also how vulnerable. So he feels the need to protect her. For instance, they might have had a close call in a previous adventure where Annabeth was nearly killed, and that memory makes Percy extra vigilant.
Their relationship is likely to be complex. They are friends and comrades who have fought side by side many times. So, there's a strong bond of loyalty between them.
One possibility is that her friends, like Percy, would immediately start a rescue mission. They would likely gather all the resources and allies they could find. Maybe they'd consult the Oracle for some clues on where Kronos has taken Annabeth.
Percy would probably be angry at first. He has a strong sense of justice and being kidnapped against his will would make him fight back. He might immediately try to use his water powers to break free or at least create a distraction.
Well, one possible reason could be that Percy made a really stupid decision without consulting Annabeth first. Like, if he went off on a dangerous mission on his own when they were supposed to be a team. Annabeth is a very strategic person and she might feel betrayed or extremely frustrated by such actions.