At the very beginning, there was nothing but discord which ravaged the universe—an existence which hosted both regular humans and spiritual beings, unwillingly. Before of this inability to share, evil ghosts known as Hollow caused chaos and death wherever they went. Even though the kind spiritual beings attempted to shut down the dangerous actions of the Hollows, this was all for naught. The secret had been quite simple: it was enveloped in reason, a mystical type of supernatural energy that caused the breakdown of reiryoku on a subatomic level, making it completely useless.