In some fanfictions, it could be related to power dynamics. Percy is often seen as a powerful and popular character. If he uses his influence or power in a wrong way towards Nico, like excluding him from a group activity or mission that Nico really wanted to be part of, it can be a reason for Nico to cry.
The story could develop with Percy realizing his mistake and trying to make amends. He might start by apologizing sincerely to Nico. Then, he could do something really nice for Nico, like helping him with a personal project or standing up for him when others are being mean.
One of the main reasons is the rich mythology that the Percy Jackson world is based on. When you add the characters of Percy, Will, and Nico into fanfiction, it gives writers a chance to play with different mythological elements. Also, the characters themselves are very relatable. Nico's struggle with his identity, Will's determination to help others, and Percy's journey as a hero are things that many readers can identify with. This makes the fanfiction very appealing as it can explore these aspects in new and different ways.
The contrast in their personalities. Percy is more of a classic hero, while Nico has a darker, more brooding side. This contrast creates an interesting dynamic that fans like to explore in fanfiction.
The Percy Jackson universe itself is rich and full of possibilities. Fanfiction writers can play around with the mythology, the powers of the characters, and the different locations. For example, Nico's connection to the Underworld offers a whole new world to explore in fanfiction. It allows for creative and exciting stories that fans can't get enough of.
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.
Nico is a very complex and interesting character. His backstory is full of mystery and pain, like his connection to the Underworld. Fanfiction writers can explore his character more deeply, like his feelings about being different from other demigods. So, people are drawn to these stories to understand him 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.
Yes, there are many. You can look for ones on platforms like FanFiction.net. Just search for 'Percy and Nico friendship' and you'll find a lot of great stories that focus on their bond as friends, like adventures they might go on together or how they support each other in the face of challenges.
There could be many authors. It might be a new writer in the fanfiction community who wants to explore this rather dark and emotional side of their relationship.