 The victorious devils rewrote history and redesigned society to suit their purposes, reversing the concepts of good and evil.The descendants of the devils, known as black-wings because of the bat-like wings that grow from their backs, rule over the white-wing descendants of the angels, whom they treat as sub-human slaves.In their society love is considered the worst of crimes, and any one found guilty of love or kindness is hunted and punished.