One day while searching the forest for a monster that has been attacking his village, Arwin finds and wakes a mysterious young woman who appears to have been sleeping for a very long time. Turns out this girl is a demon who wants Arwin to become her servant and assist her in accomplishing her goal of ripping off the wings of the six angels that protect the Earth. Doing so will allow the demon to take control of the world and make it her "7th Garden"
