He is a demon, and his name is unpronounceable. There is no exact translation; the closest meaning is "the hottest fire," but it misses the mark. He is not an awful demon, as demons go. His area of expertise is lust, but he is flawed; occasionally he allows just a hint of the softer emotion of love.
He rationalizes this by increasing the lust, and by the knowledge that the liaisons thus formed do not last very long. Most of them end in tears, and this keeps his supervisor looking the other way. Unhappy people make mistakes, many committing the more deadly sins. Ginger, as he has been nicknamed, is thus a very useful demon, with good results, and is working his way down the infernal ladder steadily.
Ginger is so competent, as a matter of fact, so experienced and good at his job, that it was a thirty-day wonder all over Hell when he apparently fell victim to his own sin.
The lady in question owned a bookshop. Ginger was there on business; he was attempting to pair the lady with a nasty, brutish, customer. Poor Ginger; he took one look at her sparkling black eyes - really black - and fell head over tail in lust with her himself.
He steered the nasty, brutish customer to a dungeon two blocks away, and set about seducing the lady.
She was no lady, though. She was a witch - a powerful witch - who had studied with great magicians and knew a demon when she smelled one. Ginger had an unmistakable scent, a kind of hot, ginger-cinnamon-cardamom odor surrounding him. It was very faint, and rather pleasing, to those who wished for seduction, for hot, mindless sexual encounters.
The lady didn't.
She had a lover already, one of the aforesaid magicians, and was not in the market for another. The magician was powerful and cold; serving one of the greater Demons, and she was definitely not in the market for a demon lover. However good Ginger might be in bed - and to be fair, he was very good - he was Bad News to one wanting an orderly life. Demons brought chaos and upset with them, and sales in her bookshops would fall drastically; Ginger's desperation and lovesick sights were already affecting customers.
She had to get rid of him, and being heartless herself, bypassed the polite method: No, thank you, I cannot possibly sleep with you.
She didn't even try the firm method: No, thank you, I don't care to sleep with you.
In fact, she never directly said. "No." She wanted to test her powers over a demon, as she had tested her powers over people. She laid her plans, assembled her ingredients very carefully; and, with powerful words and gestures, trapped Ginger in a Black Mirror.
He was mortified, and very frightened. He hadn't even seen it coming, and here he was, caught between the worlds, unable to escape. He was mortified, because the others would laugh at him, and he'd get a demotion. (Not much worse, because demons have had a hard time of it lately, and almost every one of them had been caught at one time or another.)