For the Order of the Phoenix members, they would be in a state of shock. Lupin, for example, would be very concerned about Harry. He would try to talk to Harry, offer his support, but also be on guard. Ginny would be heartbroken. She loves Harry, but the thought of him being Voldemort's heir is terrifying. She would try to hold onto their relationship while also being afraid of what Harry might become. And the Death Eaters? They would be excited at first, thinking they have a new leader, but as they get to know Harry better, they might realize he's not as easy to manipulate as they thought.
In such a fanfic, the plot could involve Harry finding a long - lost magical artifact that reveals his connection to Voldemort as his heir. As a result, he starts to have strange dreams and visions similar to what Voldemort had. The wizarding world would be in chaos as they try to figure out if Harry is going to turn to the dark side. Harry himself would be in a moral dilemma, trying to decide whether to embrace this new identity or fight against it.
His relationship with Hermione and Ron would be strained at first. They would be confused and a bit scared. But as they see Harry resist the dark side, they would become more supportive. With Dumbledore, there might be a new level of secrecy and mistrust at the start, but Dumbledore would likely keep an eye on Harry to see how he develops. As for the other students, many would be afraid and avoid him, but some might be curious and try to befriend him to see what it's like to be around the heir of Voldemort.
The teachers at Hogwarts would have diverse reactions. McGonagall might be disappointed but would still hope that Harry could resist the dark influence. Snape would be extremely complex in his reaction. Given his history with both Harry and Voldemort, he might see it as a sign of the prophecy coming full circle. The Death Eaters, on the other hand, would see Harry as a potential new leader. They might try to persuade him to embrace the dark side. As for Harry's other friends like Neville, he would be worried but would also stand by Harry, believing that he could make the right choice. The reactions of these characters would create a lot of drama and tension in the fanfic.
Voldemort would be calculating. He might be using the Armistice as a way to regain his strength or plot a new strategy. His Death Eaters would be divided. Some might be happy to have a break from the fighting, while others would be eager to continue the war. Dumbledore's followers would be watching closely too. They would be the ones to keep the balance and make sure that the Armistice doesn't turn into a way for Voldemort to take over completely. The Ministry of Magic would be in a difficult position, trying to enforce the Armistice while also dealing with the different factions within the wizarding world.
Well, Ginny would be heartbroken that Harry left. She might have expected to build a life with him after Voldemort was defeated. But she's also a strong character, so she would likely throw herself into her own life, perhaps becoming a star Quidditch player. Neville would be overjoyed that Voldemort was dead. He might take on a role at Hogwarts, teaching herbology perhaps, and sharing his knowledge with the students. As for the other characters in the wizarding world, those who had suffered under Voldemort would be in a state of jubilation and start to pick up the pieces of their lives.
Hermione would be extremely shocked and disappointed. She has always been a firm believer in the fight against Voldemort and would see Harry's alliance as a huge betrayal. She would probably try to talk Harry out of it at first and if that fails, she might start her own investigation to find out what made Harry do this.
Harry would likely be defiant at first. Even without his glasses, he has his inner strength. He would probably try to resist Voldemort's every command and look for opportunities to escape or fight back.
The wizarding world would be in shock. Hermione would probably be the first to try to rationalize it and look for a way to help Harry deal with this new reality. Ron might be more conflicted, his loyalty to Harry warring with his fear of Voldemort. The Weasley family would be divided in their opinions. Some might still support Harry, while others would be hesitant. Dumbledore's portrait, if it could, would likely offer some cryptic advice. And the Death Eaters? They might see Harry as a potential ally or a threat, depending on how they view Voldemort's paternity.
The other students at Hogwarts would be very afraid. Some might avoid Harry out of fear that Voldemort could use him to harm them. But Neville, being brave, would probably try to reach out to Harry in some way, believing that there's still good in him. The Order of the Phoenix would be in chaos at first. But then they'd start formulating plans. Lupin would be worried but also think rationally about how to deal with the situation, using his experience as a werewolf and a wizard.
The wizarding world would be in shock. Harry is seen as their last hope, so his surrender would make many lose faith. The Order of the Phoenix might go into a state of chaos, trying to figure out how to rescue Harry and continue the fight against Voldemort without him.