In a fanfiction where Regulus Black is sorted into Hufflepuff, he might face a lot of prejudice from his own family. They could be disappointed that he's not in Slytherin. But in Hufflepuff, he finds true friends who support him. He could use his intelligence (which is often associated with Slytherins) to help Hufflepuff in things like academic competitions. This would show that being in Hufflepuff doesn't mean he lacks the traits that other houses value.
A fanfiction with this premise might explore how Regulus changes Hufflepuff. His Slytherin upbringing could bring in a different perspective. He might introduce new ways of thinking about magic and the wizarding world to his Hufflepuff housemates. For instance, he could have a more cut - throat approach to Quidditch (a Slytherin trait) which could initially shock the Hufflepuffs but then inspire them to be more competitive in a healthy way. At the same time, Hufflepuff's values start to change him too, making him more open - hearted and less concerned with pure - blood status.
One interesting plotline could be Harry's struggle to fit in with the Hufflepuff values at first. Since he's always been seen as a potential Gryffindor, he has to learn about hard work, loyalty, and fairness in a new way.
For creativity. It offers a fresh take on the Harry Potter story. Instead of the typical Gryffindor sorting, Hufflepuff provides a different set of values and dynamics to explore.
One popular one might be 'The Hufflepuff's Adventure'. It often shows Harry's unique journey within Hufflepuff, making new friends and facing challenges in a different way compared to the original story.
Often, Harry will develop a stronger sense of community. Hufflepuff is very much a house that emphasizes togetherness. So he'll start to think more about the group as a whole rather than just himself. He might get involved in house - wide projects to improve the living conditions or organize social events for his housemates.
A plotline could involve Harry's friendship with Cedric Diggory. In this fanfiction, they could become even closer friends as housemates. Harry might learn from Cedric's fairness and good - naturedness. They could team up to compete in some inter - house challenges that are unique to Hufflepuff. And when Cedric faces difficulties, Harry uses his Gryffindor - like courage along with his new - found Hufflepuff loyalty to support him.
In some fanfictions, Regulus Black's involvement in Quidditch could be linked to his family's expectations. The Black family might have certain standards for him in the sport, either pushing him to excel or causing him internal conflict as he tries to balance his own love for the game with their demands.
Fanfiction about these three can take many forms. For example, there could be time - travel fics where Harry goes back in time and meets Regulus and Sirius when they were younger. This could lead to all sorts of interesting plot twists, like Harry trying to prevent Regulus from joining the Death Eaters in the first place. Or it could be a fic where Sirius survives and he and Harry explore the secrets of the Black family together, including things that Regulus left behind. There are also fics that focus on the emotional bonds between the characters, showing how the different personalities of Regulus, Sirius, and Harry interact and influence each other.