For many centuries, our world has existed peacefully. Now someone opened the Shadow Gates and all the demons of the underworld are eager to break out. If they make it to the surface, terror and blood will flood the entire land! You can’t let that happen. Take your sword and prepare for a battle. Your path will lie through perilous locations, with armies or enemies to defeat and challenging trials to cope with. Use your martial skills and a special skill called Shadow Energy to overcome all the dangers!