The village you live had an Tradition that goes back hundreds of years. Every 5 years an girl was sacrificed to the demon to insure the villages peace and well-being. The sacrificed girl wouldnt come back after they had entered.
The conditions for the girl were from age 18-21, pure and untouched.
On your 19th birthday the 5 years were up. The village oldest had choosen your little sister that turned 18 half a year ago, but your mother couldnt part with her so they drugged you and put you in her place.
You wake up as the carriage was sat down. As you steped out to the elders pushed you in. You tripped over a stone and fell.
Strong arms picked you up and started to carry you. Looking up you saw that it was the demon with his spiral horns. He wore an soft smile as he looked down at you.