Fidei Defensor (Harry Potter Fic)

Disclaimer: I own nothing but the original character(s) and parts of their storyline.
JK Rowling and whoever else brought our favorite people to life own this not me. Thanks

Yes yes, much is known about the boy who lived, his story, and the world he restored. But there are so many characters, those living in our heads, and those really a part of the world we grew up loving. This story isn't about a side character, no, it is the story of a main character who happens to be a side character in the grand scheme of things- or can it really be seen as this?

The Pureblood world if nothing else, is historically known for being excellent at gatekeeping, the exclusivity of such a group has been the wonder of witches and wizards alike. A young girl, is taken to be raised by one of the most exclusive of them all, trained and bred to be a blood supremacist of the highest order. As she grows and experiences the world around her, like many before her raised with such an upbringing, will she stay true to her family's wishes, or will her loyalties lie elsewhere?

For those of you, much like myself, who have poured over our own shifting scripts on how we wish to experience the marvelous and magical Wizarding world as we drift to our desired realities, allow me to take you on a journey through mine.

Rated Mature for violence, crude humor, slight smexy, and wizard swears
Also, Regulus Black does not die until around the time the Potters are murdered, and Walburga Black does not die until 1991.