One of the best NSFW games out there.
The story isn't neglected like so many other games, you need to invest in the characters to get them to open up, and the minigames and scenes you need to go through to get to the sex scenes are just as high quality as the porn itself.
I'm a sucker for pixel art, and the style this game goes for is one that manages to hit all the right parts. Clear and readable, yet undeniably retro.