They are in the following order (games and recap episodes will NOT be uploaded):

(You are here) Isaku (遺作) / 3 Episodes + Special Recap Episode / 1997.11.28 till 1998.05.29

- Shusaku (臭作) / 3 Episodes / 1999.04.02 till 1999.11.05

- Shusaku Replay (臭作 Replay) / 4 Episodes / 2000.07.28 till 2001.01.26

Isaku Respect (遺作 Respect) / 3 Episodes / 2001.02.23 till 2001.09.21

Kisaku (鬼作) / 6 Episodes / 2002.01.25 till 2003.04.11

Shusaku Liberty (臭作 Ｌｉｂｅｒｔｙ) / 2 Episodes / 2003.01.24 till 2003.04.25

Kisaku ULTIMATE / 1 Episode (Special Recap) / 2004.05.14

Kisaku Spirit (鬼作 魂) / 3 Episodes / 2004.05.28 till 2005.07.22

Shusaku Se-X File (臭作 SE-XFILE) / 1 Episode (Special Recap) / 2004.09.17

- Kisaku Core Mix (鬼作 THE ANIMATION コアMIX)/ 2 Episodes / 2014.03.28 till 2014.04.25

- Shusaku Core Mix (臭作 THE ANIMATION コアMIX) / 2 Episodes / 2014.09.29 till 2014.09.26

- Isaku Core Mix (遺作 THE ANIMATION コアMIX) / 2 Episodes / 2014.11.28 till 2015.01.30

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 violated by an unknown assailant... A twisted story filled with scenes of shocking and graphic hardcore sex!!!