The plot could involve some external threats that force them to rely on each other. Maybe there's a new enemy in their world that only they can defeat together. During their journey to face this threat, they have to communicate and work as a team, which helps them grow closer. Since it's an arranged marriage, there could also be family politics involved. Their families might have different expectations and agendas, which creates some tension. But through it all, Percy and Annabeth find a way to make the marriage work and fall in love in the process.
In this fanfic scenario, Percy's character could grow in his ability to communicate. He'll need to talk more openly with Annabeth about their future together, their fears, and their hopes. This will make him more mature in his conversations. Annabeth will develop her emotional side. Usually, she's very logical, but in the context of the arranged marriage, she'll have to deal with a lot of emotions - from her own doubts to her growing feelings for Percy. She'll learn to balance her logic and emotions better, which will make her a more rounded character.
One possible plot twist could be that Percy and Thalia initially resist the arranged marriage. Percy might be in love with someone else, like Annabeth. But as they are forced to spend time together for the sake of the arranged union, they start to discover each other's hidden qualities. Thalia could reveal her vulnerable side to Percy, and Percy could show his loyalty and courage in a new light to Thalia. This could gradually lead to them developing real feelings for each other, despite their initial reluctance.
It could be about a moment of intense anger or frustration from Annabeth towards Percy. Maybe Percy made a big mistake like endangering himself or others on a quest, and Annabeth's reaction is to smack him out of shock and anger.
Well, it could be about them adjusting to living together. Maybe they have to figure out how to share space, like who gets the bigger closet. There could also be cute moments like cooking together for the first time and making a mess in the kitchen.
One possible plot could be Percy and Annabeth adjusting to life as new parents. They might face challenges like protecting their baby from mythological threats. For example, they have to keep the baby safe from monsters who might target the child because of its parents' heroic status.
Well, in such a fanfic, the plot might involve a power struggle within the underworld that leads to John's arranged marriage. His new wife could be the key to a truce between two warring factions. John has to protect her from those who oppose the union. As they get to know each other, they discover that they have more in common than they thought, especially in terms of their survival instincts. This new relationship then changes the dynamics of the underworld around them.
One possible plot could be that Annabeth, with her punk style and rebellious nature, clashes with Percy's preppy and more conformist ways at first. But then they are forced to work together on a school project. As they spend time together, they start to understand each other's perspectives. Annabeth shows Percy the value of thinking outside the box and being unique, while Percy teaches Annabeth about the importance of some traditional values. Eventually, they become friends and start to influence each other's styles and outlooks on life.
One idea could be that Percy takes Annabeth to their special place by the sea where they first met. He could have a picnic set up with all her favorite foods. As the sun sets, he gets down on one knee and presents her with a ring that has a small trident and owl design, symbolizing their connection. He tells her how much she means to him and that he wants to spend the rest of his life with her.
Well, perhaps the fanfic could start with Percy and Annabeth being magically transported into a world of pirates. They are initially confused but quickly realize they need to work together. Percy might be a natural at sword - fighting on the ship, while Annabeth tries to figure out the politics among the different pirate crews. They could be on a quest to find a magical artifact that the pirates believe will give them ultimate power over the seas.
One possible plot twist could be that at first, Hermione and Severus despise each other due to their past differences. For example, Severus has always been rather cold towards Gryffindors, and Hermione is a proud Gryffindor. But as they are forced to spend time together because of the arranged marriage, they start to discover each other's hidden depths. Hermione might find Severus's intelligence and his complex past with Lily fascinating. And Severus could come to respect Hermione's quick wit and thirst for knowledge. Another plot twist could be that there is some external force trying to break up the arranged marriage. Maybe some dark wizards see it as a threat to their plans, or there are those in the wizarding world who oppose the union of a Muggle - born like Hermione and a former Death Eater like Severus.