Another consequence might be a shift in public opinion towards Harry. People might start to view him with more sympathy, which could change the power dynamics. If Harry was previously seen as an equal opponent to Voldemort, now he could be seen as a victim who needs protection. This could lead to more people rallying around Harry, and some might even try to persuade him to use his new - found status to fight Voldemort in a different way. However, it could also backfire and make Harry a target for those who don't want to see any changes in the power structure.
It could also lead to a strange alliance. If Voldemort takes Harry under his wing in a very uncharacteristic move, other dark wizards and witches might be confused or even outraged. Some might try to break that alliance, while others might see it as an opportunity to gain more power. This would create a very unstable situation in the wizarding world, with different factions vying for control and influence depending on how they view the relationship between Voldemort and Harry.
One possible consequence could be chaos. If Voldemort decides to use Harry's abuse as a reason to start attacking those he deems responsible, it could lead to a full - scale war within the wizarding world. Families could be torn apart, and allegiances would be tested as Voldemort's actions might not be seen as just by everyone.
There could be major political implications. In the fanfiction, if Bellatrix reveals Harry's abuse, it might shake the foundation of the Order of the Phoenix. Some members might question Dumbledore's leadership, thinking he should have protected Harry better. Meanwhile, the Death Eaters could use it to gain more followers, painting Harry as a broken hero. This could also lead to changes in how the wizarding world views child protection, with new laws or policies being proposed.
In the fanfiction world, the abusers may find themselves ostracized by the wizarding community once Viktor reveals what they've done. If Viktor has friends or allies in high places, they could ensure that the abusers are held accountable for their actions. There could also be legal consequences within the wizarding laws if the abuse is of a certain nature. For example, if it involves dark magic or illegal forms of coercion, the abusers could be sent to Azkaban or face other forms of severe punishment.
If the champions decide to take matters into their own hands, they could use magic to teach the abusers a lesson. For example, they could jinx the abusers so that they are unable to harm Harry again. However, if they report to the school, the abusers might face a formal hearing. Depending on the severity of the abuse, they could be banned from certain areas of the school, lose house points, or even be permanently removed from Hogwarts. There could also be social consequences, like being shunned by other students.
Fleur might expose them. If they are students, they could face expulsion from Hogwarts.
Well, in some fanfictions, Voldemort might see Harry as a tool to be used against his abusers. He could use this knowledge to manipulate Harry into joining his side, thinking that he can offer protection or revenge against those who have wronged Harry.
The abuser could face magical justice. In the wizarding world, there are probably spells or enchantments that can be used to punish wrongdoers. James Potter might use his connections to ensure the abuser is dealt with severely, like being sent to Azkaban or having their magic restricted.
Sirius might use magic to punish them. He could hex them or use some other form of magic to make them feel the pain they inflicted on Harry.
They might face magical punishment. For example, they could have their magic restricted or be sent to Azkaban if it's a really bad case. McGonagall would not tolerate such behavior and would push for the strictest punishment.
Well, in the fanfic, Harry might find himself in a very different power dynamic. With Tom Riddle knowing about his abuse, Harry could be pushed into a corner. He may be forced to rely on Tom Riddle for protection, which means he has to follow Tom Riddle's rules. This could lead to him losing his own sense of self and freedom. Also, the knowledge among others that Tom Riddle is involved with Harry due to the abuse situation might make Harry a target for those who oppose Tom Riddle, putting his life in even more danger.
The abuser might face the wrath of the champions. They could be reported to the authorities in the wizarding world.