エイケン for PC ～めくるめく電算室 エイケン仕立て～

The game is seperated into 9 story segments, played like a VN and 6 minigame segments. The plot is somewhat based around the manga.

Zasshono Academy is a very large private school with a total of 54,000 students from elementary level, to junior high and high school. Among the large number of club activities at the school, one club is quite unique: The Eiken Club. The activities of this club are shrouded in mystery, and strangely enough all the members are excessively busty, headstrong female students, like Shinonome Chiharu, the top scorer in the entrance exam.