Ryô Asagiri

After radical feminism and the emasculation of men have caused the downfall of civilization, the few remaining humans live in various settlements with vast lawless lands in between.

At about the same time as Dr. Maki Amamiya arrives in Amazon City to become the new artificial insemination expert, Kenta, a man from a Christian village, is captured while trying to give some castrated barbarians a proper burial. He is taken to Amazon City but instead of being given the usual treatment afforded to men there, he is chosen for the Male Weaponization Program. Given extremely high doses of testosterone, Kenta soon begins to change…

Kametaro Deba faces difficulty immense difficulty with women, and even after he finally marries, he enjoys a sexless life where his wife cheats on him. He kills her and dumps the body parts in the mountains, where his wife's ghost curses him and causes him to turn into a monster called "ScissorPenis".

An angry husband hires a rope expert to torture his wife and her lover.

A female police officer arrests serial killer/rapist "Jack" only to have to let him go because he has an alibi. Soon after she, her boyfriend and a visiting female relative, are targeted by "Jack".