I know nothing about the series, but am a fan of certain VN (not really into anime all that much). The artwork was intriguing and the plot sounds pretty cool. Should arrive just in time for my trip, so should keep me busy on my off-time.
Hoping there isn't a lot of high-pitched giggling and squealing?
Game's too dark for too much squealing, but it's still super anime with lots of cliches so you might not enjoy it if your tolerance for that stuff is low.