Or as the english translation goes: The Devil on G-string.
If you're in to Visual Novels, I definitely recommend this. It contains 3 side stories, and a main story line of 40 hours, and a few h-scenes at the end
Oh damn the plot twists.
And the end; holy shit I haven't cried that hard in all the time I can remember. Like, literally 20 minutes of audible compulsive crying.
Then at other times, the characters (who you actually build a personal emotional bond with) sometimes gets put in situations so awkward, that you just uncontrollably table-flip your computer.
This is a definite must-read for any Visual Novel enthusiasts