This is a spin-off of that series. It has characters from the main, romance series showing up in this first book, including Kyrian from Night Pleasures and Acheron from -- well, Acheron. Heh heh.
It had some great LOL moments.
I liked it enough that I'm going to read the second book, which you will probably see here as a different Challenge entry. That is, if I don't find something different to fill the category.