In the star calendar year 317, human civilization entered the "Era of Psychic Mechanics". A hundred years ago, a "Great Collapse" caused by the out-of-control "Forbidden Spirit Forging Technique" swept across the earth. Nuclear flames intertwined with dimensional rifts, giving birth to two parallel evolutionary paths of civilization - some humans relied on technology to develop "phantom beast mechas" to fight against alien beasts; the other group clung to ancient bloodlines and inherited the "Spirit Forging Technique" of forging weapons with their souls. Until one day, whispers came from the depths of the starry sky, and the descendants of the evil god from outside the territory arrived, and the two systems were forced to merge.
