I really like the fanfiction 'Underworld Allies' in the 'Percy Jackson and Nico Brothers' category. It has a unique take on how Nico's connection to the Underworld can be used to help Percy in tough situations. Then there's 'The Sea and the Shadows', which beautifully combines Percy's power over water and Nico's control of the shadows. It creates a really cool dynamic between the two brothers in the story. Also, 'Brothers in Battle' is a great one that focuses on their teamwork during battles against powerful foes.
At first, it might be rocky. Percy is more of a laid - back hero, Nico is the quiet and often misunderstood one, and Jason is the dutiful leader type. But as they spend more time together, they start to see the good in each other. Percy might teach them how to have fun and not take everything so seriously. Nico could show them the power of the underworld and its secrets. And Jason would bring a sense of discipline and strategy to their group.
Annabeth could be a great addition. She can provide her strategic mind and wisdom. For example, when Percy and Nico are on a quest, she could stay back at the camp but offer advice through Iris - messages. And when they get stuck, her knowledge of architecture and mythology can help them find solutions.
One possible plot could be that they discover they are brothers through a series of magical events. For example, a powerful oracle reveals the truth. Then they have to deal with the shock of this new relationship while also facing their common enemies. They might train together to combine their unique powers and protect their world from threats.
Maybe they discover they have a long - lost relative who is in danger. So they team up, Percy using his water powers and Nico his underworld powers to fight the dark forces that are after their relative. During this, they grow closer as brothers and understand each other better.
One of the things that make 'Percy Jackson and Nico Brothers' fanfiction appealing is the rich world of Greek mythology that they are set in. Fans can see how Percy and Nico interact with the gods, monsters, and other elements of this world in new and exciting ways. Additionally, the brotherly bond between them can be portrayed in various ways. Some fanfics show a more comical side of their relationship, while others dig deep into the emotional and psychological aspects, like how they deal with loss and betrayal. In fanfiction, the possibilities are endless to expand on their story.
They could have a fight and then make up. It's a classic way to develop a relationship. Maybe Nico does something Percy doesn't like in the name of protecting him, and they argue. But then they realize they were both just trying to look out for each other and become closer.
Maybe they could have a story where they discover a secret about their family's past together. They'd have to deal with the revelations and how it affects their relationship. For example, they might find out that there was a powerful ancestor and they have to figure out how to use or protect the knowledge of this ancestor. This would involve a lot of character growth for both of them as they learn more about themselves through their family history.
The camp leaders might betray them. If there is a power struggle within the camp, and Percy and Nico are seen as threats to the current leadership's power, the leaders could set them up. They could make it look like Percy and Nico are breaking camp rules or endangering the other campers, which would lead to the rest of the camp turning against them.
Percy's power over water could be used in many ways. For example, he could create water barriers or use water currents to carry them quickly. Jason's control over the wind can complement this. He could use the wind to direct Percy's water attacks or create updrafts to help them reach high places. Nico's underworld powers are also useful. He could summon the dead to gather information or use the shadows for quick escapes. Together, they can create a very versatile and powerful team.