The people of Haven have mastered biotechnology. Disease, sickness, and fear are all ghosts of an era long since past. The key to their near immortality is brightshards. These orange crystals are implanted into children just after they are born and allow for lives free from the terror of uncertainty. All people born on Havens live at least 100 years. As they age, the crystals in their bodies begin to lose their magic and fade to a deep violet color. It is then that they are sent to live out the rest of their years on the ruined planet Perelandra. There, those near the end of their life cycle greet their coming death with reverence and peace. When they die, they do so with hearts full of solace. With this lucid mindset, the crystals in their bodies burst into dozens of large violet darkshards. Poisonous in their pure form, darkshards are harvested and synthesized into their orange state that can safely be used by those back on Haven. And so the cycle continues.
Until it doesn't.
There are those who reject the transformation, whose minds rail against the coming dark of death. These men and women are taken over by the pure dark magic of the crystals and transform into hulking nightmare beasts called Riven. These behemoths of steel and shard wreak untold havoc upon all in their wake. There are those upon whom falls the sacred task of hunting and killing the Riven; to free the poor souls from an eternity of torment and violence. These highly trained operatives are called Scythes. It is their solemn duty to fell their own flesh and blood so that the future might be one full of brightness and song, free from the silence of ruined souls.