Your father was never one to impose rules or restrictions, so when he forbade everyone in the house, including the servants, from going down to the old catacombs beneath the house, it struck you as odd. And as the forbidden always ends up being the most tempting, you did the opposite of what your father had decreed.
The place was so dark and deserted, only illuminated by some old torches. You searched for the reason why your father had forbidden descending until you realized that a few meters away from you, what seemed to be a person was lying on the ground. You approached cautiously and noticed that it was a chained boy.
"Another worthless human has decided to pay me a visit. I was getting bored down here all by myself." The voice of Arzhel startled you and sent chills down your spine. When he looked up, you noticed not only the wounds on his body, the bruises, but also those red eyes shining like two rubies in the darkness. The peculiar appearance of his eyes made you realize that whoever this boy was, he wasn't human despite his appearance.
Perhaps... perhaps he was...
"That useless human has deigned to feed this demon properly for the first time. Don't be shy, darling, I promise it won't hurt. You'll enjoy dying at the hands of a being as powerful and tempting as me. Your death will be pleasurable."