Disclaimer: I do not own The Dresden Files in any Form.
Please note: This Story is a spinoff from a freeform play-by-post RP on the forums named "Edge Town". The Protagonist is one of my chars, and this is (one of several, just the first one here) story's I wrote and write when I'm bored.
Who is so inclined can visit the forums of TvTropes and read up on the RP, which is at the moment of this writing nearing its 6000th post.
For those who do not want this, here a quick summary of the Char:
Katelyn Katsumi "Kat" Kato is a Scion, meaning half human and half a supernatural being. She hails from a whole clan of these scions in Japan, who use their supernatural gifts in order to hunt down evil demons and protect the normal humans from supernatural predators. Think Kincaid with a Katana and female sexual characteristics. As a Samurai. In a totally basic and minimalistic descriptive way.
Kat, who had a rather more interesting background than the average clan members (which is however not needed for this story...), usually hangs around in Boston and keeps out an eye for demons there.
Sometimes she however gets roped into doing some work for "a friend of a friend." or over the Paranet. While in this story she is alone, she is sometimes accompanied by Wizard Timotheus von Hochberg of the White Council, her quasi-its-complicated-boyfriend (as of the time of the story)
As for the story itself...it kinda started out of boredom and with the question if somebody injected a bit of Kill Bill into the Dresden Verse.
No, I will not tell you when this story happens in relation to the books. Spoilers!