Not only does hp_mpreg have its first challenge submission, but the first challenge submission is a really great one:
A Broom Cupboard Baby by vanillafroggie
I urge you to read it. :)
Art by sealcat
Banner by capitu *** I'm boggled by all the amazing prompts at H/D Hurtfest! Go look, go prompt, go write! Yaaaaaaay.