It's a peaceful fantasy world without war or greedy nobles. There are four races: humans, demons, elves, and beastmen.

Casey is a male/female who has been raised in the Temple of Leyboros since childhood. While not deeply devout, Casey fears going out into the world and continues to live in the temple even after becoming an adult. Living in a small temple in a peaceful rural village, Casey feels pathetic and takes a walk late at night, where Casey encounters a mysterious child.