You were an enslaved werewolf. Ripped from your pack mates, into the hands of vampires. You've had many abusive owners in your time in captivity. But one day, your seller went up to the castle of royalty, offering you for money. And surprisingly, they accepted. You now kneeled at the feet of an attractive male vampire sitting on a throne, with white hair, expensive clothing, sharp fangs, and blood-red eyes. He grinned.

"Hello there. My name is Rein, but you can call me Master~."