What could be the plot of a 'Percy and Reyna Friends' fanfiction?

The fanfiction could start with Percy and Reyna being forced to work together in a diplomatic mission between the Greek and Roman camps. At first, there are misunderstandings and cultural clashes. For example, Percy's laid - back attitude clashes with Reyna's strict Roman discipline. However, during a crisis in the middle of the mission, like an attack from an outside force, they realize they need to put aside their differences. They combine their powers and skills, Percy's control over water and Reyna's ability with weapons and leadership. Through this experience, they develop a deep respect for each other and become friends who are determined to bridge the gap between the two camps.

Maybe in the fanfiction, Percy and Reyna meet during a time of peace. They initially bond over their shared love for their respective camps. They decide to exchange knowledge, Percy teaching Reyna some of the more unorthodox combat techniques he learned from Poseidon, and Reyna teaching Percy about Roman military strategies. As they spend more time together, they also help each other deal with personal issues. Percy helps Reyna open up more about her feelings towards her sister, and Reyna helps Percy better understand his role as a hero in a changing world. Their friendship grows as they support and understand each other more deeply.