For Hermione, it could be a huge loss. She might feel abandoned and try to find ways to bring him back. Ron, on the other hand, might be angry at first but then also miss his best friend terribly.
Ron would probably be quite confused and sad. He's always been close to Harry, and Harry's departure would leave a big gap in his life. He might also feel a bit guilty, wondering if there was something he could have done to make Harry stay.
His friends might feel sad and abandoned. For example, Hermione and Ron could be heartbroken at first, missing their best friend and wondering if they could have done something to make him stay.
The departure could inspire change. Their leaving might make the wizards in Britain realize that they need to be more self - reliant and not depend so much on a few heroes. It could also lead to new alliances and friendships as the wizarding community has to re - organize itself. On the other hand, it could also make the wizarding world more vulnerable to external threats as Harry and his friends were some of the most powerful wizards.
For Hermione, it would be a huge loss. She's been Harry's closest friend and they've been through so much together. She might feel abandoned and try to find ways to bring him back. Ron would also be deeply affected. Their friendship is a strong bond, and without Harry, he might feel lost and less confident. Ginny, if she's in a relationship with Harry, would be heartbroken. She may become withdrawn or more determined to find him. For the younger students at Hogwarts, Harry was a hero and his departure could shatter their sense of security and inspiration.
For his friends, it could be a huge blow. They might feel abandoned and worried about his safety. For example, Annabeth could be extremely distraught, constantly worried about Percy's well - being. Some of the younger campers who looked up to Percy might lose their sense of hope and inspiration. They may feel less secure without him around.
Well, his departure can cause a great deal of chaos. For one, the wizarding world in Magical Britain might lose its most powerful protector. Without Harry, there could be a resurgence of Dark Magic as villains might feel emboldened. His friends would also be deeply affected. They might be left feeling abandoned and less confident in the fight against evil. Also, the public's morale could take a huge hit. Harry was a symbol of hope, and his leaving could make the general wizarding population feel less secure.
It could also make them more determined to keep the wizarding world safe in his absence. They might see it as their duty to continue the fight against evil, knowing that Harry had to leave for some reason. For example, they could redouble their efforts at the Ministry of Magic or in their own magical research to safeguard the wizarding community.
For Tony Stark, it could be a blow to his ego. He might see Peter's departure as a sign of failure in his mentorship. He could also start to question his own actions and decisions that led to Peter leaving.
Arya might be inspired to go after him. In fanfiction, she could see his departure as a call to adventure herself. She might feel that there are things out there that she can learn from Jon or things she can do to help him. His leaving could be a catalyst for her own journey outside of Winterfell.
The town of Beacon Hills itself might be affected. Stiles was always in the middle of things, helping to solve supernatural mysteries. Without him, there could be an increase in unexplained events. And some of the townspeople who knew Stiles, like Sheriff Stilinski, would be deeply affected on a personal level, with the sheriff possibly becoming more overprotective of the remaining youth in town.