Claimed By the Devil

"It means once you turn eighteen, you're mine." Lucifer said in an oddly soft voice. "Yours?" Simon repeated and Lucifer nodded.

"You have been claimed by the Devil himself. No one else touches you."

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Simon is a normal student who is about to finish high school and soon to start college, well, anyone who has had only a first glance at the boy would think he is normal but he is far from it.

Being the first half-Angel and half-Demon being to exist and live past birth, Lucifer himself suddenly felt threatened by Simon's appearance, giving the hybrid only eighteen years to live.

But despite having only eighteen years he seems to live more than that, I wonder what happened...