Year XXXX A.D.. In this apocalyptic world ruled by a "God," humans live as if crawling on the ground. The human race has dwindled to a few people, but in the midst of all this, Kasago blindly believes in "Go...

A spirit was floating in another world's dungeon, missing its memories. Eventually "he" learned to possess other creatures and using the bodies of the beasts in the dungeon, made his way to the outside world...