Ar nosurge: Ode to An Unborn Star is a continuation of a PlayStation Vita title called Surge Concerto: Ciel nosurge which was a life simulation game that has not seen a release outside of Japan (yet), and something of a pseudo-prequel to the Ar Tonelico series that is also developed by Gust. The reason I mention a pseudo-prequel is that Ar nosurge and Ar Tonelico take place in the same universe with the same mythos and even a number of the same mechanics between the two franchises, however the similarities stop there as the games each cover their own topics at their own times with non-related characters. Ar nosurge: Ode to an Unborn Star, Gust's most recent release here in the West uses the Dive system as seen in the Ar Tonelico series as well as a few other feature so fans of Gust's previous works will certain feel right at home.
