Curate, connect, and discover
Pandora and Regulus as the Hufflepuff and Slytherin friendship trope but Regulus is the hufflepuff and Pandora is the slytherin and everyone is very confused about it.
Like
She's cunning and a great liar. She's able to get what she wants through lies and deceit but she's always so genuinely nice that people never suspect it. Everyone thinks she's the hufflepuff.
He's loyal. So loyal. Nobody messes with his friends (or brother) without facing the consequences. He's always sarcastic and mean and people avoid him because of it. Everyone thinks he's the slytherin.
Anyways, they're best friends and they confuse people constantly.