How does the 'Harry and Neville are twins' concept change the Hogwarts story?

It changes it a great deal. They go from being bitter enemies to having a much more complex relationship. There's an immediate connection that they can't ignore.

Harry could change Hogwarts in fanfiction through his leadership. He might inspire the students to be more united and inclusive. For instance, he could start a club or organization that focuses on helping students from different houses interact better, breaking down the traditional rivalries between Gryffindor, Slytherin, Hufflepuff, and Ravenclaw.

In the fight against the dark forces, Neville and Harry's friendship could bring some new strategies. Neville's connection with the magical plants could be used in a more strategic way. For instance, they could use mandrakes not just for curing petrified students but also as a form of defense against dark creatures. Their combined efforts might also inspire other students to be more proactive in the fight against Voldemort, leading to a more widespread resistance within Hogwarts much earlier than in the original story.

In fanfiction, Harry Potter can change Hogwarts in a multitude of ways. His unique position as the Boy Who Lived gives him a certain influence. He may use his fame and power to bring about changes in the curriculum. For example, he could push for more practical defense against the dark arts training, considering his own battles. His relationships, like his close bond with Hermione and Ron, could also lead to changes. They might start study groups or clubs that become popular at Hogwarts, changing the extracurricular landscape. Moreover, his encounters with different magical creatures could result in new courses or research areas at Hogwarts. All these elements contribute to the transformation of Hogwarts in fanfiction.

The story could then shift focus to Harry's adventures outside of Hogwarts. He could discover new magical places and meet different kinds of wizards. His departure might also lead to some of his Hogwarts friends trying to find him, creating new storylines about their search and the challenges they face along the way.

Neville would become more confident. Knowing that his parents are healed, he no longer has that underlying pain and worry. He would be more assertive in his actions and decisions, and might even take on more leadership roles at Hogwarts or in the wizarding world in general. For example, he could be more outspoken in the DA meetings.

The story often takes on a more adventurous and dangerous tone. Without the relative safety of Hogwarts, Harry is exposed to the wider wizarding world in a different way. He might have to fend for himself more, rely on new allies, and face different kinds of magic and threats. For instance, he could be traveling to different wizarding communities that have their own rules and cultures.

The reincarnation can completely change the relationships. For example, if Harry is reincarnated, he might not have the same bond with Ron and Hermione. He could form new friendships that were not possible in the original story.

In fanfictions, Harry's emancipation often means he can act more independently. For example, in some, he doesn't have to wait for Hogwarts to start learning magic. He can explore his powers on his own terms, which speeds up his development and changes the power dynamics with his enemies.

The whole dynamic of the fight against Voldemort would shift. If Harry were Snape's son, Snape's loyalty and actions throughout the series would be re - evaluated. Harry might have access to different knowledge and skills that Snape could pass on. His connection to the Dark Arts might be more nuanced. Also, the way the other Hogwarts professors treat Harry would be different. They might be more cautious or more expectant of him, given his new family connection.