Disgaea 5: Alliance Of Vengeance

The entire Netherworlds are endangered by Demon Emperor Void Dark. Since his emergence, many Netherworlds have been trampled and oppress. Void Dark leads a heinous army known as the Lost. Rumors spread that there are over 10 Billion Lost soldiers. It seemed like no one in the entire Netherworlds could stand against them... But the Netherworld is vast. Overlords, who have grudges against Void Dark and his followers, have begun an unlikely alliance to exact their vengeance.