I have to admit, after playing the original game "Gakuen Heaven: Boy's Love Scramble!" first and then watching the anime.... I grew to dislike it quite a bit. That's not to say I hate it, but there are a number of things I strongly dislike in it. Like the twins... I'm pretty sure they weren't in the game at all. I didn't particularly like the way the anime depicted Keita either... But it's not that bad.
Anyhow, here are a few CG's... I haven't unlocked them all yet and I've only accomplished Endo and Naruse's endings thus far. Plus, I missed a lot of Endo's CG events... x_X



And downloading the game... you can get a trial version of the original on Splash's main page I believe. Or try AarinFantasy.