I've managed to find out a small bit about this circle, but it was initially
a whim buy based on the artwork. The art is just terrific and I couldn't resist! ^_^ They've also done some other VoH books, one of which I have seen before but didn't get... I kind of regret that now. All of their other VoH seem to be
HamelxFlute, some H and some normal. Hinoki has since joined up with another artist and formed the circle 'Pink Dreamers',
that do doujin from a variety of series.
I have some of Pink Dreamer's doujinshi in the Inuyasha and Multi Series section.