Narcissa was never Sirius Black’s favourite cousin, nor had he been hers. Despite this, she couldn’t help but notice his growing contempt toward her relationship with Lucius Malfoy, or the shaggy black dog that regularly tried to chase him away from her—always knowing just where to find them.
Suspicion grew into obsession, and Narcissa found herself trailing her young cousin in hopes of confirming her hunch. Despite witnessing the transformation with her own eyes—she could hardly believe the truth. Sirius was an Animagus. An illegal one, at that!
Utterly taken with the sheer power and determination behind her cousin’s new, self-taught skill, Narcissa began to reflect on the family motto—Toujours Pur—Always pure. After all, she was expected to find a good match with a pure-blooded wizard—yet, whose family was more respectable than her own? Whose blood more pure? (for @dragonanddirewolf)