What are the implications of a 'Percy is in love with his sister' fanfiction?

This is a rather disturbing concept as incestuous relationships are not acceptable in society. However, there might be some very dark and inappropriate fanfictions out there that explore such themes, but I would not recommend seeking them out as they go against moral and ethical norms.

The main problem is that it's incest, which is morally wrong in almost all cultures. It goes against the natural order of family relationships.

I would highly discourage the search for such fanfiction. Fanfiction should generally be based on positive, ethical relationships. Incestuous themes can be very off - putting and can also violate the intended spirit of the original work's characters and relationships.

In some fanfictions, Percy's sister might hurt him emotionally by betraying his trust. For example, she could share his secrets with others, making him feel exposed and betrayed.

This is a very concerning concept as dating a sister involves incest, which is unethical in almost all cultures. In the Naruto universe, which has certain moral and family values, such a relationship would go against the norms. Fanfiction should not promote such unethical relationships, but rather focus on positive and ethical storylines.

Perhaps she's a sister who was thought to be dead but actually survived. She could have been corrupted by the experiences she had while being 'dead'. When she returns, she blames Percy for not saving her properly. This false blame leads her to betray Percy. She could start spreading rumors about Percy being a coward or a bad leader among the demigod community.

One consequence could be a rift in the family. Their relationship might be so strained that it affects the whole family dynamic, causing tension during family gatherings or events.

One common theme could be family loyalty. Since they are siblings, many fanfictions might explore how they support and protect each other. Another theme could be growing up. They may face different challenges as they get older and fanfictions can show how they deal with those changes together.

Well, it could be because of jealousy. Maybe his sister gets more attention from their parents or is better at something that Percy wishes he was good at.

It could also mean that Percy is part of a fan community. Reading fanfiction is a common activity among fans, and it might indicate that Percy is engaging with other fans, perhaps discussing the fanfics he reads or sharing his own thoughts on related topics.