This was apparently a doujin circle run by folks from Zuntata. Unfortunately, there's next to no information about them on the 'net besides what's archived from their old website, and even that doesn't have a whole lot. Not even a list of the people involved by alias.
Norihiro Furukawa lists the albums he participated in and which tracks are his on his works list:
http://members.jcom.home.ne.jp/nakay...neo/prof3.html. He also says that he used the name "Emiry Honda" (えみりぃ本田).
DOCS has an entry for their fifth album, Melty Kiss:
http://m-s-r.sakura.ne.jp/docs/detai...D&field=circle. DOCS's release dates are often wrong, using a later resale date, but I've found their artist info to be scarily accurate. They give four mystery participants: Yaco, BIEBAR, KA2, and Emiry Honda. No known aliases apart from Honda.