The Era of Masculinity

This is an era of only men. Men fall into two broad categories. One type works hard outside to gain fame. One type is at home, passing on offspring, caring for husbands and raising children, which is similar in nature to women. The story takes place in this era... [There may be scenes of heavy sex between boys and girls in the middle, so I don't like to enter by mistake. I don't know what I will write = = Just let it grow up slowly...