Dark Awakening (Crimson City, #2)

This is a novella that was originally published in 2007 as part of the Shards of Crimson anthology.

Kimi Noguchi is working as an intern for an advertising agency in Crimson City and she's discovered that she's a kijo or witch. She thinks having talent is cool, but her magic attracts the attention of a power-hungry Bak-Faru demon and she's forced to call on another demon, Nicodemus, for help.

Nic made a promise to stay away from Kimi for her own good, but now that she's summoned him, all bets...