Isaku (遺作) is a Japanese adult survival horror game released for MS-DOS in 1995. A Windows version and a sequel, Shusaku, were released in 1997.A sequel to Shusaku was released on PC in 2001 going by the name of Kisaku.
1 It's the last day of school before summer vacation. Kenta is gearing up for another boring summer when he receives a mysterious note. After school, he walks into the old, condemned school building, following the note's instructions. Inside, he finds that Jinpachi, Miyuki, Rika, Kotomi, Akemi, Ms. Kumi, Munemitsu and Mio have received the same note as well. Everyone decides that this is some kind of a joke, and starts arguing about the identity of the prankster. Suddenly, they hear the entrance being boarded up.
The nightmare begins as the girls vanish one by one. Rika is the first one to disappear, followed by a shocking video of Rika being broke by an unknown assailant. A twisted story filled with scenes of shocking and graphic hardcore sex!!!
Contains new versions of most of images here, redrawn in 256 colors (those here are 16, would you believe it?). I prefer this version though, as I played it long ago. Besides, the other gallery is missing a few hentai pics present here. The set has mixed image formats, so I suspect it's a compilation, but since there are no other galleries with old pics from this game, I'm uploading it until something uniform can be found - maybe someone will capture all images from this version of the game someday.
As far as I could check, order of images reflects events in game, or at least order in which player receives rape tapes if he didn't prevent abductions. 01-05 - A few images from before the gameplay begins 06-13 - Takashima Kumi (teacher) rape tape 14-24 - Sekigawa Riki rape tape 25-31 - Mikihara Akemi rape tape 32-47 - Serizawa Misho rape tape 48-49 - Soga Munemitsu + teacher rape tape 50-61 - Asakawa Kotomi rape tape 62-68 - Sakaki Miyuki + player rape (not tape, this one happens in game when everyone is caught and ends in DIAF (bad ending) ) 69-73 - some random events from gameplay 74 - a pic from one of happy endings I believe all hentai scenes are complete in this one.