In this dark age, human live under the rule of a mighty government that possesses PSYCO - a brain-washing technology that would instantly turn anyone into their willing slave. One day a young boy named Kazuya encounters Henry, a robotic leader of a resistance group that tries to overthrow the rulers. The problem is that these resistance fighters - all …

The sequel to Kōshoku Shikakenin tells us what happened to the brave hero Kazuya after he has overthrown the evil regime in the first game (and have had sex with many women on the way). One day Kazuya goes outside, enjoying the good weather, when an unknown girl appears and says she is the sister of Mai, one of the …