A kind and wealthy hunter discovers a wild teen living in the forest. He is a quarter Wolfen, with the ears and tail of his subhuman blood, fangs, claws, and is quite viscous and animalistic. The hunter manages to approach this lost and wild boy and takes him in as his own, doing his best to domesticate him.
The boy is now a young man, and while he is still very much a wild animal, he has at least learned to speak, if not very well, and follows his Masters commands obediently. He is approprietly named Remus, and there is clearly a lot of potential for him. A large reserve of magical strength is in him, and his Master wants this feral but willing Wolfen learn to embrace his human side and learn to control his power.
He brings him to a woman in the hopes of her taking him on as an apprentice. She turns down almost everyone, and actually has an apprentice right now, but sensing his power, she accepts him as her second apprentice.
Uncomfortable and feeling somewhat cornered in this house and city, he is befriended by his fellow pupil, a girl of great potential, and the two become inseparable. She is helping him to learn to read and write, and their sessions are quickly boiling over with sexual tension, Remus' first bout of heat coming on strong, making it nearly impossible to resist her.
They'll leave their sessions with the claw marks of their awkward but passionate love making, and he'll soon come to worship her much like a dog will loyally worship his master, and he will follow her commands, learning to restrain his ravenous sexual urges and to read and write by night, while at day, the both of them will explore the world of magic.