Another possibility is that he's being bullied. In school settings within fanfictions, bullying is a common theme. Percy might be trying to hide his face to avoid the taunts and mean looks from the bullies. He could be self - conscious about some aspect of his appearance that the bullies have targeted, like a scar or his overall look. By hiding his face, he hopes to protect himself from their cruel remarks.
One possible reason could be that he is on a secret mission and doesn't want to be recognized. He might be infiltrating an enemy organization or spying on someone. Another reason could be that he has some new power or mark on his face that he wants to keep hidden until he fully understands or masters it.
One possible reason could be that Naruto is hiding his face to conceal his emotions. In SasuNaru fanfiction, their relationship is often complex and full of unspoken feelings. Naruto might be afraid that Sasuke will read his true feelings if he shows his face. For example, if Naruto has developed deeper romantic feelings for Sasuke, he may not be ready to expose them, so he hides his face as a form of self - protection.
One reason could be that he doesn't want to stand out too much. In the fanfiction world, just like in the original Harry Potter story, being overly intelligent might draw unwanted attention, especially from the bad guys. He might be afraid of being targeted more if his intelligence is known.
One possible reason could be that Percy has some unique abilities or interests that set him apart from his peers. For example, if he has a special power, he might be afraid of being discovered or misunderstood. Maybe he comes from a different background that his classmates can't relate to, like a family with a strange heritage. Another reason could be that he has been bullied in the past and has withdrawn as a result.
Maybe he wants to blend in better. If he's in a situation where he needs to gather information undercover, showing off his skills would blow his cover. So he hides them to seem like an ordinary person until the right moment to strike.
He could also be hiding his injury to avoid being a burden. In the world of the fanfiction, his comrades might already have a lot on their plate, and he doesn't want to slow them down or cause them extra worry with his injury.
One possible reason could be bullying. If Percy is constantly being picked on by other students, it might push him to lose his temper. Maybe they tease him about his appearance, his family, or his abilities. Another reason could be academic pressure. If he's struggling with his studies and feels like he can't keep up, it could lead to frustration and ultimately a loss of temper.
One reason could be self - protection. In many light novels, the world is filled with danger. If the main character reveals his full strength too early, he might attract unwanted enemies. For example, in a world full of power - hungry villains, showing off strength could make the character a target.
Maybe he has some dark secrets in his past that he doesn't want to be known. For example, he might have been involved in something illegal or unethical that could damage his reputation in the world of the web novel.
In some fanfics, Percy's scar on his face could be a result of a betrayal. Perhaps a so - called ally turned on him during a mission. This person, who Percy trusted, secretly attacked him, leaving a scar on his face. This would add a layer of emotional depth to Percy's character, as he would have to deal with the pain of betrayal along with the physical reminder of it on his face.