You play the role of a man who is shipped off to Okinawa by his boss and takes advantage of the remoteness of one of the islands of Okinawa and builds a slave island, capturing men and chaining them up for his pleasure.
Oh, but the game gets BETTER, of course, because of what happens when you make the RIGHT decisions.
And, just like the CYOA books, you can choose poorly and the game ends up prematurely. Well apparently the answer is 'yes', as he just did the drawings for Okinawa Slave Island, which is, as best as I can describe, a 'Choose Your Own Adventure' book, but with cock. I had wondered why I hadn't heard from Fujimoto-sensei in a bit.
