A forbidden attachment: A Black and a Lupin

Cassiopeia Black, the twin sister of Sirius Black, enters the world of Hogwarts as a pureblood from the House of Black, a house that strongly upholds the idea of blood purity and maintaining a respectable pureblood line. Being raised with these views, Cassiopeia initially believes everything these views have taught her because these pureblood views are all she knows.However, everything changes the moment Cassiopeia breaks family tradition by being sorted into Ravenclaw and slowly, but surely befriends genuine friends. Friends that care about her being herself and not being from a pureblood family.As she befriends Lily Evans and Remus Lupin, Cassiopeia is completely amazed by them as the two are nothing like how her parents described muggleborns or even half-bloods to be. Despite occasionally relapsing back into her pureblood mindset due to her upbringing, Remus remains ever so patient and kind towards her.Amidst the backdrop of the ongoing first Wizarding war and fighting for the Order, Cassiopeia and Remus soon find themselves deeply in love but with the knowledge that most in the Wizarding world wouldn't understand their relationship.

Just as a quick disclaimer, this is my first time writing a fic story for Harry Potter in archiveofourown.org, so please be gentle and understanding in the comments. Also, I do deeply apologize if my writing comes across as something you might find in a Stephen King novel rather than a Harry Potter book.Also, this first chapter will be basically introducing Cassiopeia Black, a summary of her character, her fancast, and the TV-Tropes that best describe her character.