Developer(s) Sting Entertainment[1] Publisher(s) JP: Aquaplus[1] NA: Atlus[2] EU: NIS America[2] Platform(s) PlayStation Portable, PlayStation Vita Release date(s) PlayStation Portable JP: March 28, 2013 PlayStation Vita JP: September 25, 2014[1] NA: August 18, 2015[3] EU: October 16, 2015[4] Genre(s) Dungeon crawler, role-playing