Porn Game: Edelweiss by Overdrive

Imagine how you would study if a good GPA would give you a ticket to Sexual Paradise? Kazushi and his buddies are fed up with their poor grades and boring school life. And just as their lust for sex was about to explode, they found out about a special training program for high school girls on an isolated island: This is their chance to go to heaven!!
The game has an excellent sound design, and a very stylish drawing, coupled with a very funny plot, turns out to be quite entertaining.

Edelweiss by Overdrive game preview

online.