'Feliciano didn't want this. It was a stupid mistake. A stupid, stupid mistake. But, there he was, his stomach forming a bump, and it definitly wasn't fat.' In medieval mythology, a cambion is the off spring of a demon and a human. Popular lore says demons can make deals with humans. What happens when a angry, hurt Feliciano meets Alastair, who promises him to give him the baby he longs for, but only if he does something return? And more importantly, what does Feliciano say to a certain German, who refused to be a father before the incident? Human AU.