1: The one with first impressions

HBP au. A very frazzled Molly Weasley shows up on her oldest son's doorstep in an attempt to find the reason for his sudden disappearance. What she finds is not at all what she expects. The handsome curebreaker has a girlfriend? And shes a member of the most Noble house of Black? How is she related to Sirius?
Please send inspo for this story if you have any!