This groundbreaking h-series has revolutionized adult animation with its intense scenes of violence, perversion, and lust, featuring hardcore sex and unique sexual fetishes. The series is divided into three distinct anime titles, each named after one of the three sadistic brothers at its core: Isaku, Shisaku, and Kisaku. Each title has its own series of releases, listed here in order (note that games and recap episodes are not included): (You are here) Isaku (遺作) / 3 Episodes + Special Recap Episode / November 28, 1997 to May 29, 1998 - Shusaku (臭作) / 3 Episodes / April 2, 1999 to November 5, 1999 - Shusaku Replay (臭作 ～Replay～) / 4 Episodes / July 28, 2000 to January 26, 2001 - Isaku Respect (遺作 ～Respect～) / 3 Episodes / February 23, 2001 to September 21, 2001 - Kisaku (鬼作) / 6 Episodes / January 25, 2002 to April 11, 2003 - Shusaku Liberty (臭作 ～Ｌｉｂｅｒｔｙ～) / 2 Episodes / January 24, 2003 to April 25, 2003 - Kisaku ULTIMATE / 1 Episode (Special Recap) / May 14, 2004 - Kisaku Spirit (鬼作 魂) / 3 Episodes / May 28, 2004 to July 22, 2005 - Shusaku Se-X File (臭作 SE-XFILE) / 1 Episode (Special Recap) / September 17, 2004 - Kisaku Core Mix (鬼作 THE ANIMATION コアMIX) / 2 Episodes / March 28, 2014 to April 25, 2014 - Shusaku Core Mix (臭作 THE ANIMATION コアMIX) / 2 Episodes / September 29, 2014 to September 26, 2014 - Isaku Core Mix (遺作 THE ANIMATION コアMIX) / 2 Episodes / November 28, 2014 to January 30, 2015 As the last day of school before summer vacation rolls around, Kenta braces himself for yet another uneventful break. But his plans take a dark turn when he receives a mysterious note. Following its instructions, he ventures into the old, condemned school building after school. To his surprise, Jinpachi, Miyuki, Rika, Kotomi, Akemi, Ms. Kumi, Munemitsu, and Mio are all there, having received the same note. Initially, they think it's just a prank and start bickering about who might be behind it. But their laughter quickly turns to terror as they hear the entrance being boarded up from the outside. The nightmare begins as the girls start disappearing one by one. Rika is the first to vanish, and soon after, a horrifying video surfaces showing her being brutally violated by an unknown assailant. What follows is a twisted tale filled with shocking and graphic hardcore sex scenes that will leave you on the edge of your seat!