In this fanfiction, the idea of Harry being betrayed by the light might stem from a corruption within the light - sided forces. They could start to use unethical means to fight the dark side, and Harry, with his strong moral compass, doesn't agree. As a result, they might ostracize him or try to frame him for something he didn't do. This would make Harry feel extremely betrayed, as he has always believed in the light and now they are turning against him.
Well, in 'harry betrayed by the light fanfiction', it could be that the so - called good guys, who are associated with the light, have their own agendas. Maybe they sacrifice Harry's well - being or safety for the greater good as they perceive it. For example, they might make decisions without his consent that put him in danger, making Harry feel betrayed. It could also be about secrets being kept from him that, when revealed, make him feel like he can't trust those he thought were on his side.
Well, it could be about Harry Potter experiencing a sense of betrayal within the context of the 'light' side in the wizarding world. Maybe the so - called good characters or forces that are supposed to represent the light, like the Order of the Phoenix or Dumbledore, do something that makes Harry feel let down or betrayed. It could involve secrets being kept from him that he later discovers and feels were a form of betrayal.
Obviously, Harry would be one of the main characters. Since it's about him being betrayed, he's at the center of the story. And it's likely that characters like Hermione and Ron, who are usually on Harry's side in the original series, could also be important characters, as they might be part of the ones who betray him or be involved in the situation that makes Harry feel betrayed.
One possibility could be that Ginny is influenced by dark magic or a powerful enemy. Maybe she's forced to betray Harry to protect her family. For example, Voldemort's remaining followers could threaten to harm her family if she doesn't spy on Harry and give away his secrets. Another idea is that there could be a misunderstanding. Ginny might think she's doing the right thing for Harry, but it ends up looking like a betrayal. For instance, she could be trying to help him by making a deal with someone she believes is good, but who actually has ulterior motives.
In such a fanfiction, perhaps Harry's friends are jealous of his newfound powers or popularity within the wizarding world. So they spread rumors about him being untrustworthy. As a result, Harry is shunned by many in the community. He has to embark on a solo journey to prove his innocence and in the process discovers who his true friends really are.
Perhaps Harry is betrayed by the wizarding world as a whole. The Ministry of Magic wrongly accuses him of a serious crime. With no one to turn to, Voldemort approaches Harry. Voldemort shows Harry a world where he can be in control, instead of being at the mercy of those who have turned against him. So, Harry decides to join Voldemort out of desperation and a thirst for revenge against those who betrayed him.
Well, perhaps in this fanfic, Harry could be wrongly accused of a serious crime like dark magic use. Everyone, including his friends Hermione and Ron, might turn their backs on him due to false evidence. He would then have to fight alone to clear his name and find out who really framed him.
In such a fanfiction, perhaps the parents were forced to betray Harry due to some dark magic or a powerful enemy threatening them. Maybe they had to give up Harry to save the wizarding world from an even greater evil.
In a 'Harry Potter betrayed by Gryffindor' fanfiction, perhaps there is a prophecy that is misinterpreted. The Gryffindors think Harry is the cause of upcoming doom instead of the savior. So, they begin to betray him. Harry would then have to struggle not only with the external dark forces but also with the internal pain of being rejected by those he considered friends and housemates. He might start to question his own identity and values, and his journey would be about regaining the trust of Gryffindor or finding his own path without them.
Well, one possible plot could be that his family wrongly accuses Harry of using dark magic without proper evidence. They then shun him and spread false rumors about him in the wizarding community, leaving Harry feeling isolated and betrayed.
One possible plot could be that Harry is framed for a serious crime he didn't commit. Maybe someone has used Polyjuice Potion to look like him while doing dark magic. The wizarding community, believing the false evidence, sends him to Azkaban. In Azkaban, he has to endure the Dementors and try to prove his innocence from within the prison walls.