My Little Reaper

.....wait what? OUCH!

William took another deep breath and met the eyes of the demon. "Yes." Sebastian blinked a few times. "Yes?" William nodded and Sebastian blinked again. "My decision is yes Sebastian, I will become your mate." As the words left William's lips Sebastian reacted in the blink of an eye. He quickly grabbed William, hugging him tightly and burying his head into the reapers neck.  William pat his back, taken back by the desperate action. "N-not quite what I expected you to d-AHHH!" Sebastian sank his fangs into William's neck, his arms locking the reaper in a death grip. Blood leaked into the demons mouth and he dug his teeth deeper,  causing William to cry out in pain. "STOP!" Sebastian opened his eyes and pulled off his neck, William reacting as if instinct to cover his neck and jump back, pointing his scythe at the demon. "What the hell was that for?!?" Sebastian smirked and wiped the blood from his mouth. "Can't a demon claim his new mates blood before his body?" William growled at him and held his neck, shielding the bite. "You bite me, to claim me?" Sebastian nodded and walked to him, the air becoming dense with shadows. "William, you agreed to be my mate, things are going to get a lot more rough." William was pinned against what he thought was a wall, he couldn't tell. The reaper couldn't see anything but the glow of Sebastian's eyes. "Rough? as in rougher than it already is?" He felt a large hand slam on the wall next to him. "Much more William. Much much more." William gulped.