If Harry gets resorted into Ravenclaw, Luna Lovegood could be a great love interest. They already have a certain connection in the original series, and in this new scenario where Harry is in her house, their relationship could develop into a romantic one. Luna's unique perspective on life could attract Harry even more.
Obviously, Harry himself is a main character. He's the one going through the resorted situation. Dumbledore could also be a significant character as he might have some role in the resorting process or in guiding Harry afterwards.
Well, in such a fanfiction, Harry might end up in a different house than Gryffindor. He could be resorted into Slytherin, which would completely change his relationships. For example, his friendship with Ron and Hermione might be strained as they are in Gryffindor. And he'd have to deal with the Slytherin stereotype and make new friends among them.
One potential love interest could be Draco Malfoy. In this new scenario, as a girl, Harry might see a different side of Draco and they could develop a love - hate relationship that turns into a real romance over time. Another could be Neville Longbottom. They have a shared history of being underestimated, and as a girl, Harry might be drawn to Neville's kind and brave nature.
One possible plotline could be Harry being resorted into a different house and falling in love with a character from that new house. For example, if he gets resorted into Hufflepuff, he might start a romance with a kind - hearted Hufflepuff girl who helps him see the house in a new light.
It could be a new character, like a foreign exchange student from Beauxbatons. She has a different charm and magic style compared to Hogwarts students, which catches Harry's eye.
Perhaps a mortal with a special gift for metallurgy or some other craft related to Hephaestus' work. This mortal could be seen as an equal in terms of skill, at least in a way that catches Hephaestus' eye. They would bond over their shared love for the craft, and over time, this bond could turn into a deep, loving relationship. Hephaestus might be drawn to the mortal's unique perspective and the way they approach the craft despite not having the same divine powers as he does.
In fanfiction where Harry gets resorted to Hufflepuff, it would be an interesting twist. Firstly, the Hufflepuff common room is near the kitchens, so Harry would be closer to the food source which could lead to some fun scenarios. Secondly, the Hufflepuff house is not as flashy as Gryffindor. So Harry would have to adapt to a more low - key environment. He might start to value the quieter, less noticed acts of heroism. And his relationship with Cedric Diggory could be different. Since they are in the same house, they could be closer friends or rivals in a different way than in the original story.
In fanfiction where Harry is resorted into Slytherin, he might face a whole new set of challenges. He could be ostracized by his Gryffindor friends at first. However, he might also find some unexpected allies in Slytherin. For example, he could befriend some of the more open - minded Slytherins who see his potential and value his skills. This new sorting could also lead to a different dynamic with Draco Malfoy. Instead of being rivals, they might become begrudging comrades or at least have a more complex relationship.
Hinata is a very obvious choice. She has always had deep feelings for Naruto. In a fanfiction, their relationship could spiral further, exploring more of their shared interests, like their love for the village and their dreams for the future of the ninja world.
A Slytherin girl like Pansy Parkinson could be an interesting love interest. If Harry asks to be resorted, perhaps it's because he's intrigued by Pansy's confidence and the mystery that surrounds Slytherin girls. Their relationship would be full of challenges given the traditional Gryffindor - Slytherin rivalry.