It has been 1,000 years since the first leader of the Getsu clan defeated the demon lord Ryūkotsuki, driving the demons back into the Underworld, and restoring order to the world of man. The Getsu clan has since faithfully watched over the forces of evil to maintain that balance. But when Ryūkotsuki abruptly returns, and all hell quite literally breaks loose, it falls unto a new hero to rise up against the demonic threat. Wield an otherworldly arsenal and powers of the Getsu clan, descending into the depths of Hell to uncover mysteries surrounding the origin of the demonic invasion.