In the wizarding world at large, the presence of Harry's baby sister could be a symbol of hope or a new target for dark forces. Families like the Weasleys would likely welcome her into their fold, and this would strengthen the bond between Harry and the Weasley family even more. However, some families with dark pasts or leanings might see her as a threat to their future plans.
The relationship between Harry and the Hogwarts faculty could be different. The teachers would be more watchful not only of Harry but also of his sister. Dumbledore, in particular, might have special plans for her, just as he had for Harry. This could create a new dynamic where Harry has to balance his own role and his sister's in Dumbledore's grand schemes.
It would change Harry's relationship with his friends. They would now have to also be protective of his baby sister. For example, Ron and Hermione might take on an almost parental role at times. They would be more cautious in their adventures to ensure the sister's safety.
If Harry Potter had the Infinity Stones in fanfiction, it would completely transform the wizarding world. Magic as we know it would be redefined. Harry could potentially use the Time Stone to go back and prevent Voldemort from ever rising to power in the first place. The Reality Stone could be used to create new magical landscapes or even change the nature of existing spells. With the Power Stone, he might be able to enhance the power of every wizard and witch in the world, making them more capable of defending against dark forces. Overall, it would be a radical shift from the original Harry Potter universe.
The wizarding world would likely be plunged into a state of despair. Harry was seen as the 'Chosen One' to defeat Voldemort, so without him, there would be a sense of hopelessness. Voldemort would probably have free rein to impose his dark rule without much opposition at first.
The wizarding world would become more open to Muggle - borns. Harry being a Muggle - born advocate would ensure that there are no discriminatory practices against them. He might also make Hogwarts more accessible to students from all backgrounds, not just those with a magical family history.
In fanfiction, Harry Potter can change the Wizarding World in many ways. For example, he might introduce new spells or magical concepts that were not in the original series. He could also have different relationships with other characters, which in turn would affect the social dynamics of the Wizarding World.
Their view might expand. They'd see different takes on the wizarding world that they hadn't considered before.
If Harry invented spells like 'Teleporto Instanto', which allows for instant teleportation anywhere in the wizarding world, it would completely revolutionize travel. People could go from Hogwarts to Diagon Alley in a blink. It would also change the way battles are fought as wizards could quickly escape or surprise their enemies.
Their relationship could lead to a more inclusive wizarding world. If Raven has different beliefs or magical practices, it might encourage others to be more open - minded. For example, if she's into a more spiritual form of magic, it could inspire new research and study at Hogwarts. Also, their marriage might set an example for inter - house or even inter - species relationships, which were previously not so common.
Their marriage might also change the way different wizarding families interact. Since Harry is famous and Tonks comes from a well - known family, their union could bridge gaps between different social groups in the wizarding world. This could lead to more cooperation in areas like magical research and international relations.
If this were to happen in fanfiction, the wizarding world's response would be very complex. On one hand, there are those who have grown to respect Harry Potter and might be more accepting of his choice. But there are also deep - rooted prejudices. Some wizards might worry about the dilution of magic in the wizarding bloodlines. There could be a division in the wizarding community. Some might see the child as a symbol of hope for a more inclusive wizarding world, while others would try to isolate the family. Harry would have to face a lot of opposition and also find allies within the wizarding world to protect his family.
The Weasleys' understanding could be both broadened and a bit muddled. On one hand, they might see new interpretations of old magic or different ways characters could have interacted. For example, if the fanfiction explored a different side of Snape's actions in Book 6, it could make them think. But on the other hand, they might be confused as some fanfictions can be really out - there. They'd have to sort through what was based on real knowledge of the wizarding world and what was pure imagination.