Well, perhaps he discovers that there are some dark secrets behind his being stolen. There could be a powerful and evil force that was responsible for it, like a dark wizard who wanted to use Harry for some nefarious purpose. So, he then has to not only find his true family but also figure out how to deal with this hidden threat. And he may seek help from unexpected sources, like a reclusive old wizard who has some knowledge about his past.
In this fan fiction, Harry might find out that his real family is from a different part of the wizarding world. He could have special powers or a heritage that was being hidden from him. As he uncovers the truth, he may have to learn new spells and magic that are unique to his real family's lineage. This could lead to him having to train in secret, away from Hogwarts, and make new allies who are connected to his true family.
One possible plot development could be that Harry embarks on a journey to find his real family. He might start by looking into any clues he can find in his adoptive family's belongings or memories. Another could be that he faces a lot of internal conflict. He has grown up in a certain environment and now has to come to terms with the fact that it was all based on a lie. He may also have to deal with the reactions of his friends, some of whom might not believe him at first.
Well, perhaps Harry initially struggles with his new - found interest. He might be conflicted because of the long - standing rivalry between his friends and the Malfoys. But then he could start to see Draco in a new light, leading to some awkward and yet interesting encounters between them as he tries to reconcile his feelings with the reality of their families' differences.
It could be the person who stole Harry in the first place. Maybe they are a powerful wizard who wants to keep Harry away from his real family for some self - serving reasons. They might be afraid that if Harry reunites with his true family, they will lose some kind of power or influence they have gained from keeping Harry in the dark.
One possible plot development could be Harry's struggle with his mental health. He might experience symptoms like depression, anxiety, or post - traumatic stress disorder. Another could be his search for justice or revenge against the perpetrator. He may also face challenges in his relationships as he tries to come to terms with what happened.
One plot development could be Lucius using this information to try and manipulate Harry. He might offer Harry a way out of his abusive situation in exchange for Harry's loyalty or some other form of service. For example, he could ask Harry to spy on Dumbledore for him.
One possible plot development could be that Draco tries to expose the abuser. He might gather evidence secretly and present it to the right authorities at Hogwarts.
One interesting plot development could be how Harry's relationship with the wizarding world changes. Knowing Sirius is his father might make him feel more confident and entitled to certain things. He might demand more answers from Dumbledore about his family's past and the secrets that were kept from him. Another aspect could be his relationship with the Weasleys. It might become a bit strained as he realizes his true lineage and starts to see himself in a different light, perhaps more of a pure - blood heir in his own mind, which could contrast with the Weasleys' more humble status.
Another plot development could be the reaction of the wizarding community. When they find out that Harry and Voldemort are mates, there would be chaos. Some might think that Harry has been turned to the dark side. His friends, like Hermione and Ron, would be deeply confused and might even feel betrayed at first. They would have to decide whether to trust Harry's judgment or oppose him, which could lead to a great rift in their friendship.
One interesting plot development could be how Harry deals with the reactions of his friends. For example, Hermione might be initially shocked but then become very supportive, using her vast knowledge to research about this unprecedented situation for a male wizard. Ron, on the other hand, could be more comically bewildered and struggle to come to terms with it.
After the discovery, a possible plot development could be that the champion takes Harry away to a secret location to keep him safe. From there, they might try to heal Harry's emotional wounds. As they do this, they could encounter various obstacles, like the abuser trying to find them or the wizarding authorities not believing their story. The champion might then have to prove Harry's situation, which could involve finding witnesses or evidence. Another development could be that the champion's actions draw the attention of a powerful and mysterious figure in the wizarding world, who either helps or hinders their efforts to protect Harry. This could lead to a whole new set of challenges and adventures in the fanfiction.
One possible plot could be that the twin has been hidden away by some dark force all this time. When Harry discovers the twin, they have to figure out how to break the spell or curse that was placed on the twin. Another plot might be that the twin has been living in the Muggle world, unaware of their magical heritage, and Harry has to introduce them to the wizarding world and they face various challenges together.