THE DEMON ORORON (Akuma no Ororon), by Hakase Mizuki. First published in 1998 and first published in North America in 2004.
PLOT:
Chiaki has led a lonely life. Her parents disappeared long ago and most people ostracize her for her ability to see spirits, so she's mostly lived on her own. One day she stumbles across a strange blond man on the street and takes him in. She couldn't have possibly guessed that she is part angel, or that her powers have made her a target to the forces of heaven and hell. Luckily for her, the stranger she found is Ororon, the king of demons, and he swears to protect her from all those that would threaten her.
