[1][2][3][4][5][6][7] The story is narrated by a Roman historian, during the time of the Emperor Nero.

In the beginning, humanity was composed solely of females who reproduced asexually.

One day, a Cleft gave birth to a male child, which they called a "monster."

But more "monsters" were born, and the Clefts left them on a rock to die.

One day, a female wandered over to the valley and was raped by the now-adult men.