A plotline could be that Jason is jealous of the easy camaraderie between Percy and Annabeth. Percy and Annabeth have a long history together, and Jason feels left out. So, he tries to insert himself into their conversations and activities. But every time he does, it just backfires. For instance, when they are planning a mission, Jason tries to take over Percy's role in strategizing with Annabeth, but his ideas are not as well - received because he doesn't understand their dynamic as well. This jealousy could also lead to some self - discovery for Jason, where he realizes his own insecurities and works on them.
Annabeth might be annoyed. She's very perceptive, so she quickly realizes Jason's jealousy. She'll probably tell him directly to stop acting childish and respect her relationship with Percy.
In this fanfic, it could be that Percy and Jason are under the influence of a magical spell or a powerful charm. This influence makes them act against their normal moral compasses and betray their friends. The story could then focus on how their friends try to break the spell and bring them back to their side, while also dealing with the consequences of their betrayal.
In some fanfictions, Jason might be jealous of Percy because Percy has a closer connection to certain characters. For example, if Percy has a special bond with Annabeth that Jason wishes he could have. Maybe Percy is more well - known among the demigods, and Jason, coming from a different camp, feels left out or envious of Percy's status.
In the fanfic, it could be that Percy and Thalia have a certain level of trust and understanding that Jason lacks with either of them. For example, they might communicate in a way that Jason wishes he could with them. Percy's relationship with the gods, especially Poseidon, and Thalia's connection to Zeus might make them a more formidable and enviable pair in Jason's eyes. He may be jealous of the power dynamics and the way they interact within the story.
One possible plot could be that in the fanfic, Jason is jealous of Percy's natural leadership skills. Percy always seems to know what to do in a crisis, and the other demigods look up to him. Jason, on the other hand, feels like he has to constantly prove himself. So, he starts trying to outdo Percy in every mission, which leads to some tense and exciting situations. For example, they might both be trying to solve a mystery at Camp Half - Blood, and Jason's jealousy causes him to take unnecessary risks just to show he's better than Percy.
One reason could be competition for a girl. Maybe they both have feelings for the same female character in the story, like Annabeth, and Jason's jealousy over Percy's relationship with her leads to a fight.
Perhaps in the fanfiction, Percy has a special connection with nature or the moon in a way that Artemis feels is encroaching on her domain. Like Percy discovers a new power related to the moon that no one expected, and Artemis, being protective of her lunar powers, becomes jealous. This could lead to a series of challenges and confrontations between them as Artemis tries to reassert her dominance over her own areas of influence.
One reason could be Percy's popularity. Percy has many friends and is well - liked in the demigod community. Jason might feel overshadowed by Percy's charisma and the attention he gets.
At first, it might show the tension between them due to Jason's jealousy. Jason could be distant or snippy with Percy. But as the story progresses, they might start to communicate. Maybe Percy notices Jason's jealousy and tries to reach out, which begins to thaw the ice between them.
One idea could be that Jason is jealous of Percy's popularity among the demigods. So, he tries to outdo Percy in various quests, leading to some friendly competition that eventually turns into a real understanding between them. For example, there could be a big quest to retrieve a powerful artifact, and both Jason and Percy are chosen. Jason, being jealous, initially tries to take the lead all the time but realizes that Percy's skills are also valuable and they end up working together successfully.