torture of a wife.

On the way home from work late for overtime, Yukiko of OL was attacked by four men on an unpopular road. A few days later, she died of it. The man who saw the miserable death of his beloved sister vowed to revenge on the culprit. A year later, the man found four members of the group and slew his three men's wives one after another to kill them, eventually visiting a mansion in which he lived and attacking the last woman. And if you kill her, the revenge will end. However, I learned that she was raped by four men just like her sister.