Hyperdimension Neptunia: Producing Perfection

You take on the role of the main character who accidentally falls into Gamindustri and is immediately hired by one of the four CPUs - Neptune, Noire, Blanc and Vert - to be their producer and manage their idol careers. Buckle up, ladies, because a new producer is in town and the fate of Gamindustri is at stake! Will you succeed in raising these CPUs to be idols, or will their citizens be stolen from them by the popular idol group MOB-48! Teach the girls to sing and dance and make them popular with the population, thanks in part to your experience training video game idols on Earth. As the girls' popularity grows, they can sing duets with each other or even join together to form a whole ensemble!