Cute little AU I just cooked up, what if Vox and Alastor grew up together.. But Alastor's family is actually a demon family in human disguise. Alastor's family has to keep it a secret, but Alastor will use his demon powers to protect his bestie. Bonus points if Vox doesn't know their secret.
Imagine you're a teenager that picked on sweet little young Vincent. His friend tries to protect him but you push them out of the way. You're like "I can do whatever I want because I'm bigger than you." Then when you're walking home at night you see his friend standing under the light of a street lamp. You think you can just push him out of the way, but then he opens up his face to a full set of sharp teeth and grows 3x your size and is like "I can do whatever I want because I'm bigger than you :)"