Bound

"I own you? What the hell is that even supposed to mean?!"

"Everything that I am," the demon stated calmly, "is yours to do as you please. The blood contract bounds me to you."

"I don't...I don't understand. You're a demon, and you're mine?!"

"Until the day you die, I will happily satisfy your every need."

"What's the catch?"

The demon growled, smirking slowly, "I'll tell you on your due date."