"Hentai" - another word used to refer to "Eroge" or Bishojo games. Se Kirara is an eroge that's being developed by Max factory. From the looks of the character design, HCG and PV, we can see that it looks like its going to be a high quality game - and its going to be *free*. Thats right folks - 0 Yen.
The free shenanigans commence on the 26th of March when the game is released. I probably would have picked up Japanese much quicker if I had eroge around in my time when I was a wee lad studying Japanese ^^;
Thanks to Paul for reminding me about this.