Isaku

Isaku (遺作) is a hentai survival horror game released for 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. An anime series based on the games was also released in 1997. The objective of the game is to have the player and his companions escape from a locked school building while avoiding being captured by Isaku, the villainous school gardener. The player takes the role of Kenta, a high school student trapped by Isaku on the fourth floor of an abandoned school building together with several schoolmates and a teacher. The only way out is through a stairwell, the doors of which are locked on every floor. The player must search the rooms on...