The third game from super-producers Siter Skain, and is apparently a remake of a game for the Japanese FM Towns computer. Let me just get this this game is by far the jewel in the crown of Siter Skain. It's been 10+ years since Siter Skain put out their first game, but this latest release (released in the summer of 2010) shows that they have been learning what works, studying how to make it work, and designing. I find it hard to fault anything with this game, and could have surely seen it as PS2 release. Note that most doujin software requires very little muscle as far as computing power. I play most of these games on my computer connected to my TV, which is a pentium III 1Ghz. This game requires a bit more power. I would recommend that you have at least a pentium 4 2.0Ghz. The graphics and gameplay are fairly intense, and damn near melted my machine. :0)
Watch the video below, then play the demo (in the free software section <--- over there) and see for yourself. I think you'll be amazed.