Haha, found this series' opening - on a Pandora Hearts comm, no less. :'>
http://www.youtube.com/watch?v=2WoOS75RU2g
Tagging, yay.
EDIT: Darn, I can't make out the Studio info. D: Well, have links: article , Website
I guess it's too new for the voice actor and visual novel databases to be updated because even knowing the series name and one of the voice actors, still no info. /D