Well, Sasuke might initially be a bit shocked but then he'd try to hide his concern. Sakura would be very empathetic and might immediately want to do something to help Naruto. Kakashi, being the experienced one, would take a more calm and strategic approach to deal with Naruto's situation and protect him from further abuse.
There could be a big divide within the village. Some villagers might feel guilty and try to make amends, while others might be defensive. This could lead to internal conflict. The village elders might also have to take steps to reform the village's social structure to prevent such abuse from happening again.
Well, Kakashi is a complex character. When he discovers Naruto is abused in the fanfiction, he may first feel a deep sense of guilt for not noticing earlier. He'd then use his skills and influence in the village. He could start by reporting it to the proper authorities in Konoha, like the Hokage. And at the same time, he'd be there for Naruto, providing emotional support, talking to him, and helping him through the trauma. Kakashi has his own past traumas, so he'd understand what Naruto is going through on some level.
Well, in some versions, it might start with Team 7 being shocked at first. They may initially doubt Naruto's ability to be in ANBU because they still see him as the goofy Naruto they've always known. But as they see him in action, they start to respect his new role more. Maybe Naruto has to keep some secrets from them initially which causes some tension within the team, but eventually, they come to accept and support his position in ANBU.
Sam could be in shock at first. Then he might start to dig deeper into Dean's past to understand the full extent of the abuse. He would likely try to get Dean to open up more about it and offer his support in any way he can. For example, he could be more understanding when Dean has certain triggers related to the abuse.
In this kind of fanfiction, there could be a lot of shock and disbelief among the characters at first. His friends might feel guilty for not noticing the signs earlier. They would probably become extremely protective of Percy.
Well, first of all, the students would probably be shocked. His friends, like Ron and Hermione, would be extremely angry at the Dursleys. They might try to comfort Harry more often. And the school itself could start providing special resources for Harry, such as counseling or extra protection spells. Also, there could be a big change in the way the wizarding community views Harry. Instead of just seeing him as the 'Boy Who Lived', they would see him as a victim who needs support.