Guardians of Eden

Long, long ago, a devastating war between the Divines and the Demons turned most of the world into wastelands. Fortunately, a group of beautiful and kind Valkyries stepped in to protect humanity's last refuge, ""Eden"".

In exchange, the church had to send priests to tend to the Valkyries' needs, providing them with food, shelter, and any services they required. This was supposed to be an honorable duty, but strangely, priests taking care of the Valkyries seemed to always pass away within ten years...